How hard is the IB Diploma? Pass rates, points and 2025 statistics

The two-year IB Diploma combines six subjects with coursework, final examinations and the three core elements: TOK, the Extended Essay and CAS. The practical difficulty is managing different kinds of work at once: subject knowledge, research, argument, assessed projects and overlapping school deadlines. A pass rate describes a group of candidates; it does not measure your workload or predict your result.

For historical context, the May 2025 final bulletin records 102,233 DP Diploma results, including Diploma and Retake candidates: 83,703 diplomas awarded and 18,530 not awarded, giving an 81.9% pass rate. The figures below remain explicitly tied to that session.

Read the denominator before the headline percentage

DP/CP totals, course candidates, anticipated candidates and second-year diploma candidates are not identical populations. A pass rate for one group cannot simply be multiplied by the total number of all IB candidates.

These invented round numbers explain the arithmetic; the dated May 2025 figures below are a separate dataset. A cohort pass rate is not an individual student's probability of success. Your subject grades and exact award conditions matter more for choosing a retake.

Compare the May 2026 provisional analysis with IB in Numbers, 2022–2025, keeping provisional and final figures distinct. Use the diploma checklist for your own result.

IB Diploma statistics from May 2025

The May 2025 assessment session was large. Across the Diploma Programme and Career-related Programme, the IB reported 202,102 students, 3,400 schools and 153 countries. For the DP Diploma qualification specifically, the bulletin reported 128,398 students, 3,241 schools and 617,534 student-subject entries.

For DP Diploma results, including the Diploma and Retake categories, the principal figures were:

• 102,233 DP Diploma results in the results data.
• 83,703 diplomas awarded.
• 18,530 diplomas not awarded.
• 81.9% DP pass rate.
• 30.6 mean total points across DP Diploma results, including candidates awarded and not awarded the diploma.
• 4.9 mean DP subject grade.

The workload also depends on level. The IB curriculum gives 240 teaching hours for an HL subject and 150 for an SL subject over the programme. These are teaching hours, not a promised homework allowance. HL expects a greater body of knowledge, understanding and skills; choosing four HLs changes the balance of your timetable.

Why 24 points can still mean no Diploma

The 81.9% pass rate sounds strong until you flip it around. An 18.1% non-award rate means thousands of students finished the programme and still did not get the Diploma in that session.

The bulletin gives a useful breakdown of students who did not receive the Diploma:

• 678 students were in the 0-10 point band.
• 5,190 were in the 11-19 point band.
• 8,955 were in the 20-23 point band.
• 3,592 were in the 24-29 point band but still did not receive the Diploma.
• 106 were in the 30-34 point band but still did not receive the Diploma.

Not receiving the Diploma can reflect total points, HL/SL thresholds, low-grade limits, core or CAS requirements. For example, HL 4+4+3 gives only 11 HL points; a 28-point overall total would not fix the missing 12-point HL minimum. Diagnose the condition before choosing a retake.

May 2025 score bands and university conditions

The final May 2025 distribution places 9.8% of Diploma results in the 40–45 band. The following bands describe that results population, rather than an individual student’s chance of reaching a particular score:

• 27.7% were in the 24-29 point band.
• 27.6% were in the 30-34 point band.
• 20.4% were in the 35-39 point band.
• 9.8% were in the 40-45 point band.

Read a university offer as both a total and any named subject condition. For example, an offer requiring 38 overall and a 6 in Chemistry is not satisfied by 38 overall with a 5 in Chemistry. This is an illustrative offer, not a universal entry requirement.

What subject-grade percentages measure

The May 2025 subject-group table covers 758,832 entries and excludes subjects with fewer than ten students. Its mean grade is 4.7. The percentages below describe subject entries, not distinct students, and include a separate N category for no grade:

• 8.3% of subject entries were grade 7.
• 21.0% were grade 6.
• 27.2% were grade 5.
• 23.4% were grade 4.
• 12.6% were grade 3.
• 4.6% were grade 2.
• 0.8% were grade 1.
• N (no grade): 2.1%.

One student contributes several subject entries. An 8.3% share of grade 7 entries is therefore not the percentage of students who received a 7, and N must not be read as grade 1. The assessment overview explains marks, grades and moderation.

Subject-group means are not a difficulty ranking

The May 2025 bulletin also reports mean grades by subject group. The averages were not identical:

• Language acquisition: mean grade 5.2.
• Studies in language and literature: mean grade 4.9.
• Individuals and societies: mean grade 4.8.
• Sciences: mean grade 4.5.
• Mathematics: mean grade 4.4.
• The arts: mean grade 4.3.
• Interdisciplinary subjects: mean grade 4.3.

These means mix students, subject choices and levels. They cannot establish that mathematics is harder for every student or that a higher-average group is an easier route to points. Compare the actual syllabus, assessment tasks, your preparation and university prerequisites.

Core assessment adds research and writing

Core work adds distinct demands. The Extended Essay is independent research ending in a paper of up to 4,000 words. TOK is assessed through an exhibition and an essay of up to 1,600 words. CAS adds no Diploma points but must be completed.

The final May 2025 core chart reports a mean of 1.5 core points and the following distribution. These are the 2025 values, rather than the preceding year’s column:

• 0 core points: 17.8%.
• 1 core point: 24.6%.
• 2 core points: 45.4%.
• 3 core points: 12.2%.

Schedule research, drafting and feedback alongside subject revision, using the dates confirmed by your school. The TOK/EE matrix shows how the two grades combine; an E is an award problem, rather than simply a lost bonus.

Why this matters for retake students

A non-award count does not tell you how many students later retook, why they did so or whether they improved. For a personal decision, separate an unmet IB award condition from an unmet university offer and identify the assessment that would need to change.

A student might retake because:

• they did not receive the Diploma;
• they received the Diploma but missed a university condition;
• one HL subject grade was too low;
• they were close to the next grade boundary;
• their total score was acceptable, but the wrong subject pulled them down.

This is why an IB retake should be planned around the exact weakness. Do not retake everything out of panic. Work out whether the issue is one subject, one HL grade, the core, timing, or a specific Diploma condition.

Build a workload plan from actual tasks

Put the next school deadlines on one calendar and label the work each requires: reading, data collection, drafting, revision or timed paper practice. A week containing an IA deadline and an EE draft needs a different plan from a week of exam revision. Agree priorities with your teachers before those tasks collide.

Use one timed paper or a reviewed piece of coursework to identify a specific gap, then plan the next practice task around it. Recheck the result against the relevant criterion. This gives a more useful answer to “How hard is IB for me?” than treating the global pass rate as a personal forecast.