{"id":46321,"date":"2026-09-17T11:02:03","date_gmt":"2026-09-17T04:02:03","guid":{"rendered":"https:\/\/times.edu.vn\/?p=46321"},"modified":"2026-09-17T11:02:21","modified_gmt":"2026-09-17T04:02:21","slug":"ib-chemistry-grade-boundaries","status":"publish","type":"post","link":"https:\/\/times.edu.vn\/en\/ib\/ib-chemistry-grade-boundaries\/","title":{"rendered":"IB Chemistry grade boundaries 2026: How they work and what they mean for your result"},"content":{"rendered":"<p>IB Chemistry grade boundaries are the score thresholds used to determine final grades from 1 to 7 in each examination session. These boundaries are not fixed in advance and can change depending on paper difficulty, overall candidate performance, and the grade-setting process used by the IBO. SL and HL have separate boundaries, so historical data is most useful as a planning range rather than an exact prediction of the score required in a future session.<\/p>\n<p>This guide explains how IB Chemistry grade boundaries work, why they change, and how students can use past data to set realistic revision targets.<\/p>\n<h2>What are grade boundaries in IB Chemistry and how does the IBO set them?<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/times.edu.vn\/wp-content\/uploads\/2026\/09\/IB-Chemistry-grade-boundaries.webp\" alt=\"IB Chemistry grade boundaries\" width=\"1000\" height=\"667\" \/><\/p>\n<p>Grade boundaries in <a href=\"https:\/\/times.edu.vn\/en\/ib\/ib-chemistry\/\">IB Chemistry<\/a> <sup><a href=\"#tooltip-ref-1\" class=\"tooltip-link\" data-tooltip=\"https:\/\/ibo.org\/programmes\/diploma-programme\/curriculum\/sciences\/chemistry\/\">[1]<\/a><\/sup> are the minimum raw score thresholds that separate each grade band from 1 to 7. The International Baccalaureate Organisation (IBO) does not fix these thresholds in advance. Instead, a team of senior examiners reviews the overall statistical performance of the global cohort after every sitting, then sets boundaries that reflect how difficult that particular paper was.<\/p>\n<p>This process is called grade setting, and it is the IBO&#8217;s mechanism for ensuring that a grade 7 in May 2023 represents the same standard of achievement as a grade 7 in November 2024. If an exam paper was exceptionally hard, the IBO adjusts the <a href=\"https:\/\/times.edu.vn\/en\/ib\/the-ultimate-ib-diploma-program-ibdp-guide\/\">IB<\/a> Chemistry grade threshold downward so that students are not penalized for a difficulty spike they had no control over.<\/p>\n<blockquote><p>One critical detail often overlooked is that grade setting involves both statistical analysis and professional judgment. Chief examiners study the mark distributions, identify where the natural breaks in performance occur, and then confirm that the proposed boundaries are educationally defensible. The result is a grade boundary document that is released publicly after results day, though with a delay that prevents students from accessing it before or during the exam.<\/p><\/blockquote>\n\n\t<button class='btn-dang-ky' onclick=\"openPopup('popup1')\">\n\t\t<span class='text-effect-1'>\n\t\t\t<svg\n\t\t\t\txmlns='http:\/\/www.w3.org\/2000\/svg'\n\t\t\t\tviewBox='0 0 64 64'\n\t\t\t\twidth='24'\n\t\t\t\theight='24'\n\t\t\t\taria-label='Calendar icon'\n\t\t\t>\n\t\t\t\t<rect width='64' height='64' rx='6' fill='#caa15a'\/>\n\t\t\t\t<rect x='10' y='14' width='44' height='40' rx='4'\n\t\t\t\t\tfill='none' stroke='#ffffff' stroke-width='4'\/>\n\t\t\t\t<line x1='10' y1='24' x2='54' y2='24'\n\t\t\t\t\tstroke='#ffffff' stroke-width='4'\/>\n\t\t\t\t<line x1='22' y1='6' x2='22' y2='18'\n\t\t\t\t\tstroke='#ffffff' stroke-width='4' stroke-linecap='round'\/>\n\t\t\t\t<line x1='42' y1='6' x2='42' y2='18'\n\t\t\t\t\tstroke='#ffffff' stroke-width='4' stroke-linecap='round'\/>\n\t\t\t<\/svg>\n\t\t\tBook a Trial Class\n\t\t<\/span>\n\t<\/button>\n<p><strong style=\"color: #f00;\">&gt;&gt;&gt; Read more:<\/strong> <a class=\"xem-them-link\" href=\"https:\/\/times.edu.vn\/en\/ib\/ib-chemistry-books\/\">IB Chemistry books<\/a> 2026: Complete guide for students and teachers<\/p>\n<h2>How IB Chemistry grade boundaries vary between exam sessions<\/h2>\n<p>The most consistent finding from years of IBO data is that IB Chemistry grade boundaries are stable in a relative sense, but they are never identical from one session to the next. A boundary may shift by three to six percentage points in either direction depending on paper difficulty, cohort size, and the proportion of students taking SL versus HL.<\/p>\n<p>May and November sessions typically show small but measurable differences. The May session involves the larger global cohort, which provides a richer statistical base for boundary setting. The November session, which is taken primarily by students in the Southern Hemisphere, involves a smaller cohort, and this can occasionally produce slightly wider variance in where boundaries fall.<\/p>\n<blockquote><p>A common mistake we see is students treating boundaries from a single past session as a guaranteed target. If the May 2023 boundary for grade 7 SL was 68%, some students assume they need exactly 68% and plan their revision accordingly. That logic ignores the fact that the 2024 boundary could sit at 72% or 65%, depending entirely on how the new cohort performs globally.<\/p><\/blockquote>\n<p><strong style=\"color: #f00;\">&gt;&gt;&gt; Read more:<\/strong> <a class=\"xem-them-link\" href=\"https:\/\/times.edu.vn\/en\/ib\/ib-chemistry-paper-1-vs-paper-2\/\">IB Chemistry Paper 1 vs Paper 2<\/a>: Key Differences + Strategy for Score 7<\/p>\n<h2>Historical grade boundary data for IB Chemistry SL and HL<\/h2>\n<p>Drawing on years of experience at <a href=\"https:\/\/times.edu.vn\/\">Times Edu<\/a> reviewing grade boundary documents across multiple IB Chemistry sessions, we can present the following aggregated ranges. These figures represent the typical boundaries observed across recent sessions under the current syllabus structure, where Paper 3 has been removed and Paper 1 is split into 1A (Multiple Choice) and 1B (Data-Based Questions).<\/p>\n<table>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">Final Grade<\/th>\n<th colspan=\"1\" rowspan=\"1\">Description<\/th>\n<th colspan=\"1\" rowspan=\"1\">SL Typical Range<\/th>\n<th colspan=\"1\" rowspan=\"1\">HL Typical Range<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">7<\/td>\n<td colspan=\"1\" rowspan=\"1\">Excellent<\/td>\n<td colspan=\"1\" rowspan=\"1\">67% to 76%<\/td>\n<td colspan=\"1\" rowspan=\"1\">73% to 80%<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">6<\/td>\n<td colspan=\"1\" rowspan=\"1\">Very Good<\/td>\n<td colspan=\"1\" rowspan=\"1\">59% to 66%<\/td>\n<td colspan=\"1\" rowspan=\"1\">63% to 72%<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">5<\/td>\n<td colspan=\"1\" rowspan=\"1\">Good Pass<\/td>\n<td colspan=\"1\" rowspan=\"1\">48% to 58%<\/td>\n<td colspan=\"1\" rowspan=\"1\">51% to 62%<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">4<\/td>\n<td colspan=\"1\" rowspan=\"1\">Basic Pass<\/td>\n<td colspan=\"1\" rowspan=\"1\">37% to 47%<\/td>\n<td colspan=\"1\" rowspan=\"1\">40% to 50%<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">3<\/td>\n<td colspan=\"1\" rowspan=\"1\">Basic<\/td>\n<td colspan=\"1\" rowspan=\"1\">26% to 36%<\/td>\n<td colspan=\"1\" rowspan=\"1\">26% to 39%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>These ranges aggregate real boundary data from recent sessions including May 2025 projections based on current syllabus performance trends. The HL ranges are consistently higher because the extended material requires greater precision and depth of analytical response.<\/p>\n<blockquote><p>One pattern that experienced tutors at Times Edu track carefully is that the lower boundary for grade 7 in SL has rarely dropped below 65% or exceeded 78% in recent years. This makes it a useful planning anchor, provided students understand it as a range and not a fixed target.<\/p><\/blockquote>\n\n\t<button class='btn-dang-ky' onclick=\"openPopup('popup1')\">\n\t\t<span class='text-effect-1'>\n\t\t\t<svg\n\t\t\t\txmlns='http:\/\/www.w3.org\/2000\/svg'\n\t\t\t\tviewBox='0 0 64 64'\n\t\t\t\twidth='24'\n\t\t\t\theight='24'\n\t\t\t\taria-label='Calendar icon'\n\t\t\t>\n\t\t\t\t<rect width='64' height='64' rx='6' fill='#caa15a'\/>\n\t\t\t\t<rect x='10' y='14' width='44' height='40' rx='4'\n\t\t\t\t\tfill='none' stroke='#ffffff' stroke-width='4'\/>\n\t\t\t\t<line x1='10' y1='24' x2='54' y2='24'\n\t\t\t\t\tstroke='#ffffff' stroke-width='4'\/>\n\t\t\t\t<line x1='22' y1='6' x2='22' y2='18'\n\t\t\t\t\tstroke='#ffffff' stroke-width='4' stroke-linecap='round'\/>\n\t\t\t\t<line x1='42' y1='6' x2='42' y2='18'\n\t\t\t\t\tstroke='#ffffff' stroke-width='4' stroke-linecap='round'\/>\n\t\t\t<\/svg>\n\t\t\tBook a Trial Class\n\t\t<\/span>\n\t<\/button>\n<p><strong style=\"color: #f00;\">&gt;&gt;&gt; Read more:<\/strong> <a class=\"xem-them-link\" href=\"https:\/\/times.edu.vn\/en\/ib\/ib-chemistry-hl-mistake-log\/\">IB Chemistry HL Mistake Log<\/a> 2026: How to Track Errors and Turn Them into Score Improvements<\/p>\n<h2>How to use IB Chemistry grade boundary data to set realistic score targets<\/h2>\n<p>The most strategic way to use IBO grade boundaries Chemistry data is to build a buffer into your target score. Because the specific cutoff shifts by a few marks every session, aiming for the exact lower boundary of your desired grade is a high-risk approach. If you are targeting a grade 7 and the boundary sits at 73% for HL, preparing to perform at 73% means that a slightly harder paper or a poor day could push you into grade 6 territory.<\/p>\n<p>At Times Edu, we advise students to set their working target at five percentage points above the historical lower boundary for their desired grade. For HL students aiming for a 7, that means practicing to perform consistently at 78% or above. For SL students, the equivalent working target would be around 72%.<\/p>\n<p>The following step-by-step process helps students translate grade boundary data into an actionable revision strategy:<\/p>\n<ul>\n<li><strong>Step 1: Identify your component weights.<\/strong> Paper 1 (1A and 1B combined) accounts for 36% of your final scaled mark. Paper 2 accounts for 44%. The Internal Assessment accounts for the remaining 20%.<\/li>\n<li><strong>Step 2: Calculate your current weighted percentage.<\/strong> Use your most recent mock scores for each paper and your IA mark to calculate where you stand on a 100-point scale.<\/li>\n<li><strong>Step 3: Identify your weakest component.<\/strong> Because Paper 2 carries the highest weight at 44%, a consistent underperformance on extended-response questions will drag your overall mark down more than any other single factor.<\/li>\n<li><strong>Step 4: Apply the buffer.<\/strong> Set your individual paper targets so that your weighted total lands five points above the historical lower boundary for your target grade.<\/li>\n<li><strong>Step 5: Track progress weekly.<\/strong> Use timed past papers under exam conditions and calculate your weighted mock percentage after each attempt.<\/li>\n<\/ul>\n<blockquote><p>In our experience working with international students, the ones who reach grade 7 are rarely those who studied the most hours. They are the ones who understood their numbers, identified their specific paper-level gaps, and revised with a clear percentage target in mind.<\/p><\/blockquote>\n<p><strong style=\"color: #f00;\">&gt;&gt;&gt; Read more:<\/strong> <a class=\"xem-them-link\" href=\"https:\/\/times.edu.vn\/en\/ib\/ib-chemistry-hl-study-plan\/\">IB Chemistry HL Study Plan for<\/a> 2026: A Week-by-Week Schedule to Stay Ahead<\/p>\n<h2>How grade boundaries differ between IB Chemistry SL and HL<\/h2>\n<p>IB Chemistry SL and HL boundaries differ in ways that reflect not just the volume of content but the type of reasoning each level demands. HL students encounter additional topics including kinetics extensions, further organic chemistry, and more complex electrochemistry. The exam papers themselves carry higher cognitive demand, and the mark schemes reward <a href=\"https:\/\/times.edu.vn\/en\/a-level\/what-is-a-level\/\">a level<\/a> of precision that is not required at SL.<\/p>\n<p>Because of this, IB Chemistry SL HL boundaries are not directly comparable in percentage terms. A 70% mark in SL Chemistry and a 70% mark in HL Chemistry do not represent the same intellectual output. HL students need to achieve a slightly higher percentage to reach grade 7, and the IBO accounts for this by setting HL boundaries that acknowledge the greater difficulty of the material rather than simply rewarding more students for getting a lower proportion of marks correct.<\/p>\n<p>The practical implication for students choosing between SL and HL is significant. A student who takes HL Chemistry and achieves a grade 6 has demonstrated a higher level of academic capability than a student who achieves a grade 6 at SL, and most competitive universities are aware of this distinction when reviewing IB transcripts. From a study-abroad profile perspective, HL Chemistry is a meaningful signal for science, medicine, and engineering programs.<\/p>\n\n\t<button class='btn-dang-ky' onclick=\"openPopup('popup1')\">\n\t\t<span class='text-effect-1'>\n\t\t\t<svg\n\t\t\t\txmlns='http:\/\/www.w3.org\/2000\/svg'\n\t\t\t\tviewBox='0 0 64 64'\n\t\t\t\twidth='24'\n\t\t\t\theight='24'\n\t\t\t\taria-label='Calendar icon'\n\t\t\t>\n\t\t\t\t<rect width='64' height='64' rx='6' fill='#caa15a'\/>\n\t\t\t\t<rect x='10' y='14' width='44' height='40' rx='4'\n\t\t\t\t\tfill='none' stroke='#ffffff' stroke-width='4'\/>\n\t\t\t\t<line x1='10' y1='24' x2='54' y2='24'\n\t\t\t\t\tstroke='#ffffff' stroke-width='4'\/>\n\t\t\t\t<line x1='22' y1='6' x2='22' y2='18'\n\t\t\t\t\tstroke='#ffffff' stroke-width='4' stroke-linecap='round'\/>\n\t\t\t\t<line x1='42' y1='6' x2='42' y2='18'\n\t\t\t\t\tstroke='#ffffff' stroke-width='4' stroke-linecap='round'\/>\n\t\t\t<\/svg>\n\t\t\tBook a Trial Class\n\t\t<\/span>\n\t<\/button>\n<p><strong style=\"color: #f00;\">&gt;&gt;&gt; Read more:<\/strong> <a class=\"xem-them-link\" href=\"https:\/\/times.edu.vn\/en\/ib\/ib-chemistry\/\">IB Chemistry<\/a>: Syllabus, Exam Structure &amp; Roadmap to an 7 in 2026<\/p>\n<h2>Where to find official IB Chemistry grade boundary documents<\/h2>\n<p>The IBO publishes official grade boundary documents on the IB Results website, accessible to students after results day using their personal code. Coordinators at IB schools also receive access to these documents. The grade boundary document IB Chemistry students are looking for is titled &#8220;Grade Award&#8221; and lists the minimum mark required for each grade across every component for that specific session.<\/p>\n<p>Several third-party platforms aggregate and visualize historical grade boundaries for IB Chemistry, including sites that allow you to calculate predicted grades based on your paper scores. These can be useful for planning purposes, but students should treat aggregated third-party data as estimates rather than official records.<\/p>\n<blockquote><p>A detail that matters for study-abroad applications: Some universities, particularly in the UK and Canada, request historical grade boundary data as part of a contextual admissions process. If you are applying to a university that uses this information, ask your IB coordinator to provide the official documentation directly from the IBO rather than relying on third-party summaries.<\/p><\/blockquote>\n<p><strong style=\"color: #f00;\">&gt;&gt;&gt; Read more:<\/strong> <a class=\"xem-them-link\" href=\"https:\/\/times.edu.vn\/en\/ib\/ib-tutor\/\">IB Tutor<\/a> 2026: How to Choose the Right Tutor for Better Grades and Less Stress<\/p>\n<h2>Frequently asked questions<\/h2>\n<div class=\"hoi-dap-thok-new low-faq\">\n<div class=\"thong-tin-dai\">\n<p class=\"tit-dai\"><strong>What are grade boundaries in IB Chemistry and why do they change each session?<\/strong><\/p>\n<div class=\"chi-tiet-thong-tin\">Grade boundaries in IB Chemistry are the minimum scores required to achieve each grade from 1 to 7. They change each session because the IBO adjusts them based on overall cohort performance and paper difficulty. A harder paper results in lower boundaries, while an easier paper tends to produce higher boundaries.<\/div>\n<\/div>\n<div class=\"thong-tin-dai\">\n<p class=\"tit-dai\"><strong>What percentage of marks do you typically need for a grade 7 in IB Chemistry?<\/strong><\/p>\n<div class=\"chi-tiet-thong-tin\">The percentage for grade 7 IB Chemistry typically falls between 67% and 76% at SL and between 73% and 80% at HL. These ranges are based on aggregated data from recent sessions. Students should plan to exceed the lower end of these ranges by at least five percentage points to create a reliable safety buffer.<\/div>\n<\/div>\n<div class=\"thong-tin-dai\">\n<p class=\"tit-dai\"><strong>Where can I find official grade boundaries for past IB Chemistry sessions?<\/strong><\/p>\n<div class=\"chi-tiet-thong-tin\">The official source is the IBO Results website, where students and coordinators can access grade boundary documents after each session. Some third-party revision platforms also publish historical data, though these should be verified against official IBO documentation where possible.<\/div>\n<\/div>\n<div class=\"thong-tin-dai\">\n<p class=\"tit-dai\"><strong>Do IB Chemistry grade boundaries change depending on paper difficulty?<\/strong><\/p>\n<div class=\"chi-tiet-thong-tin\">Yes. This is precisely the purpose of the grade-setting process. If a Paper 2 is assessed as particularly demanding by chief examiners, the minimum mark for each grade will be adjusted downward. Students do not need to score as many raw marks to achieve the same final grade compared to a session with an easier paper.<\/div>\n<\/div>\n<div class=\"thong-tin-dai\">\n<p class=\"tit-dai\"><strong>How do grade boundaries differ between May and November sessions in IB Chemistry?<\/strong><\/p>\n<div class=\"chi-tiet-thong-tin\">The May session involves the largest global IB cohort and typically produces more statistically stable boundaries. The November session serves a smaller cohort, primarily in the Southern Hemisphere, and can occasionally show slightly more variation in where boundaries are set. Over recent years, however, the differences between May and November session IB Chemistry boundaries have been relatively minor under the current syllabus.<\/div>\n<\/div>\n<div class=\"thong-tin-dai\">\n<p class=\"tit-dai\"><strong>Can I use past grade boundaries to predict my result in IB Chemistry?<\/strong><\/p>\n<div class=\"chi-tiet-thong-tin\">Past grade boundaries give you a reliable planning range, but they cannot predict your exact result because boundaries shift each session. The most responsible approach is to use historical data to identify a target range, apply a buffer of five or more percentage points above the historical lower boundary, and practice to exceed that target consistently in mock conditions.<\/div>\n<\/div>\n<div class=\"thong-tin-dai\">\n<p class=\"tit-dai\"><strong>How do IB Chemistry HL grade boundaries compare to SL boundaries?<\/strong><\/p>\n<div class=\"chi-tiet-thong-tin\">IB Chemistry HL grade boundaries are consistently higher in percentage terms than SL boundaries. HL students typically need to achieve between 73% and 80% for a grade 7, compared to 67% to 76% at SL. This reflects the greater cognitive demand of the HL syllabus and the precision required in HL mark schemes, not simply a larger volume of content to memorize.<\/div>\n<\/div>\n<\/div>\n<p><strong>Conclusion<\/strong><\/p>\n<p>At Times Edu, our tutors work with IB Chemistry students across both SL and HL to build personalized revision plans that are grounded in real grade boundary data. Whether your student is sitting the May or November session, targeting a university program in the UK, North America, or Asia, or working to strengthen a borderline grade, the strategy begins with knowing your numbers and understanding what each paper actually demands.<\/p>\n<p>If you would like a detailed academic roadmap that maps your current IB Chemistry performance against realistic grade targets and university admission requirements, our senior consultants are available for a personalized consultation. The earlier you understand where the boundaries sit and how far you are from them, the more focused and effective your remaining revision time will be.<\/p>\n\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-right kksr-valign-bottom\"\n    data-payload='{&quot;align&quot;:&quot;right&quot;,&quot;id&quot;:&quot;46321&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;bottom&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;1&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;5&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;\u0110\u00e1nh gi\u00e1 b\u00e0i vi\u1ebft&quot;,&quot;legend&quot;:&quot;5\\\/5 - (1 vote)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;title&quot;:&quot;IB Chemistry grade boundaries 2026: How they work and what they mean for your result&quot;,&quot;width&quot;:&quot;142.5&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 142.5px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            5\/5 - (1 vote)    <\/div>\n    <\/div>\n","protected":false},"excerpt":{"rendered":"<p>IB Chemistry grade boundaries are the score thresholds used to determine final grades from 1 to 7 in each examination session. These boundaries are not fixed in advance and can change depending on paper difficulty, overall candidate performance, and the grade-setting process used by the IBO. SL and HL have separate boundaries, so historical data &#8230; <a title=\"IB Chemistry grade boundaries 2026: How they work and what they mean for your result\" class=\"read-more\" href=\"https:\/\/times.edu.vn\/en\/ib\/ib-chemistry-grade-boundaries\/\" aria-label=\"Read more about IB Chemistry grade boundaries 2026: How they work and what they mean for your result\">Read more<\/a><\/p>\n","protected":false},"author":10,"featured_media":46282,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"content-type":"","rank_math_title":"","rank_math_description":"","footnotes":""},"categories":[170],"tags":[],"class_list":["post-46321","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ib"],"_links":{"self":[{"href":"https:\/\/times.edu.vn\/en\/wp-json\/wp\/v2\/posts\/46321","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/times.edu.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/times.edu.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/times.edu.vn\/en\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/times.edu.vn\/en\/wp-json\/wp\/v2\/comments?post=46321"}],"version-history":[{"count":2,"href":"https:\/\/times.edu.vn\/en\/wp-json\/wp\/v2\/posts\/46321\/revisions"}],"predecessor-version":[{"id":46336,"href":"https:\/\/times.edu.vn\/en\/wp-json\/wp\/v2\/posts\/46321\/revisions\/46336"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/times.edu.vn\/en\/wp-json\/wp\/v2\/media\/46282"}],"wp:attachment":[{"href":"https:\/\/times.edu.vn\/en\/wp-json\/wp\/v2\/media?parent=46321"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/times.edu.vn\/en\/wp-json\/wp\/v2\/categories?post=46321"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/times.edu.vn\/en\/wp-json\/wp\/v2\/tags?post=46321"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}