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

The IB Diploma is not difficult because one subject is impossible. It is difficult because six subjects, Internal Assessments, Theory of Knowledge, the Extended Essay, CAS, deadlines, exam papers and university pressure all happen in the same two-year programme. That is the part people sometimes miss when they only look at one final score.

The numbers back this up. In the IB's May 2025 Final Statistical Bulletin, there were 102,233 DP second-year students included in the Diploma results. The DP pass rate was 81.9%, which means 18.1% did not receive the Diploma in that session. In actual people, the bulletin lists 83,703 diplomas awarded and 18,530 diplomas not awarded.

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 second-year Diploma results, the most important figures were:

• 102,233 DP second-year students in the results data.
• 83,703 diplomas awarded.
• 18,530 diplomas not awarded.
• 81.9% DP pass rate.
• 30.6 mean total points for DP Diploma qualification students.
• 4.9 mean DP subject grade.

Those numbers matter because they make the IB feel less mysterious. It is not a programme where everyone smoothly gets 35+ points if they "work hard." A lot of students pass, yes, but a very large number are close to the line, miss conditions, or do not receive the Diploma at all.

Almost one in five did not receive the 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.

That last part is important. The IB Diploma is not only about reaching a nice-looking total score. Students can miss the Diploma because of specific award conditions, core requirements, subject combinations or other rules. This is why the IB feels stricter than many normal school systems: one weak area can affect the whole result.

A 24 is not the same as being safe

People often talk about 24 points as the basic Diploma threshold, but the May 2025 data shows why that can be misleading. Some students in the 24-29 point band were awarded the Diploma, but 3,592 students in that same band were not.

So yes, total points matter. But the Diploma is not just a scoreboard. The final outcome also depends on meeting the IB's award conditions. That is one reason students planning an IB retake should not only ask, "How many points do I need?" They should also ask, "Which exact condition or subject is blocking the result I need?"

High scores are genuinely rare

The May 2025 grouped point distribution also shows how hard the upper end is. Only 9.8% of DP Diploma results were in the 40-45 point band. The largest groups were much lower:

• 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.

This is why a 36, 37 or 38 can already be a very strong result, and why university conditions asking for high HL grades can feel brutal. The top end is crowded with strong students, but the percentages are still small.

The subject grades show the pressure too

Across all reported student-subject entries in May 2025, the mean grade was 4.7. The total grade distribution was not mostly 6s and 7s. It looked more like this:

• 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.

That is the reality of the IB scale. Getting a 7 is possible, but it is not normal. A lot of students sit somewhere between 4 and 6, and for many university courses, one grade too low in the wrong HL subject can become the whole problem.

Some subject groups are tougher on average

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.

This does not mean one subject is automatically easier for every student. It does show that the IB is not evenly soft across the board. Maths and sciences, especially at HL, can be the exact place where a student misses a university offer by one grade.

The core is another way students lose points

The Diploma core is not decoration. Theory of Knowledge and the Extended Essay can change the final points total, and weak core performance can make an already stressful result worse.

In May 2025, the mean core points figure was 1.5. The core point distribution showed:

• 19.6% of students received 0 core points.
• 25.2% received 1 core point.
• 43.8% received 2 core points.
• 11.4% received 3 core points.

So when students say the IB is rigorous, this is part of what they mean. You cannot only focus on the final papers. The core still sits there, quietly affecting the total.

Why this matters for retake students

The IB statistics make one thing clear: retakes are not rare because students are lazy. Retakes happen because the programme is genuinely demanding and because the difference between "fine" and "not enough" can be small.

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.

The honest conclusion

The IB Diploma is rigorous. The May 2025 data shows that clearly: 18,530 DP second-year students did not receive the Diploma, the average total points figure was 30.6, only 9.8% were in the 40-45 band, and grade 7s made up 8.3% of subject entries.

That does not mean the IB is impossible. It means students should treat it seriously, especially if a university offer depends on one subject or one total score. And if the result does not go the right way, a retake is not embarrassing. It is a normal response to a programme that is built to be demanding.