IB Diploma Score Calculator

The International Baccalaureate (IB) Diploma Programme is an internationally recognized, highly rigorous pre-university curriculum. First introduced by the International Baccalaureate Organization (IBO) in 1968, the program is now taken by over 300,000 students annually across more than 150 countries.

To earn the prestigious diploma, students must study six academic subjects chosen from the six official IB subject groups. Each of these six subjects is graded on a scale from 1 (lowest) to 7 (highest), yielding a maximum of 42 subject points (6 subjects × 7 points = 42).

In addition to the subject points, students can earn up to 3 core points from the compulsory core components: the Theory of Knowledge (TOK) course and the Extended Essay (EE) research project, which combine via a standard points matrix. This brings the maximum possible score for the IB Diploma to 45 points.

To successfully pass and receive the diploma, a student must achieve an absolute minimum of 24 points, while also satisfying multiple strict distribution rules. The global average score typically ranges between 30 and 32 points, and scoring 40 or higher puts a student in the top tier globally.

When designing their IB Diploma curriculum, students must select three subjects to study at Higher Level (HL) and three subjects at Standard Level (SL). In some circumstances, exceptional students may opt for four HL and two SL subjects. Higher Level courses are substantially more demanding, requiring a minimum of 240 teaching hours compared to 150 hours for Standard Level courses.

To achieve academic breadth, students must choose one subject from each of the first five Groups: Studies in Language and Literature (Group 1), Language Acquisition (Group 2), Individuals and Societies (Group 3), Sciences (Group 4), and Mathematics (Group 5). For their sixth subject, students can choose an Arts course from Group 6 (The Arts) or select an additional course from Groups 1 through 5, such as a second science or individual and societies course.

HL subjects require a much deeper exploration of course material and form the bedrock of a student's academic profile. Because they demonstrate advanced academic rigor and specialization, HL subjects carry significant weight in university admissions, often forming the core basis for competitive conditional university offers.

Theory of Knowledge (TOK) and the Extended Essay (EE) are the two graded core requirements of the IB Diploma Programme. Together with CAS (Creativity, Activity, Service), they form the core of the curriculum. TOK and the Extended Essay are both graded on an A (Excellent) to E (Elementary) scale.

These two grades are combined using the official IBO Core Points Matrix to award up to 3 additional points toward the final 45-point total. Achieving an "A" in both components guarantees the maximum 3 core points, while scoring lower combinations yields 2, 1, or 0 points.

Understanding these conditions matters because they act as strict thresholds. A student could theoretically score 30 points but still fail the diploma if they receive a Grade 2 in three Higher Level subjects, or an "E" in TOK. Keeping track of these boundaries helps students mitigate academic risks early and allocate study resources where they are needed most to ensure all criteria are met.

Grade boundaries are the percentage mark ranges required to achieve grades 1 through 7 in each IB subject. Unlike other secondary education programs with static thresholds, IB grade boundaries are dynamic. They are adjusted after every examination session to account for variations in paper difficulty and global student cohort performance, maintaining historical standards.

Boundaries differ substantially between Timezone 1 (primarily covering the Americas and East Asia) and Timezone 2 (covering Europe, Africa, Asia-Pacific, and Australia) to ensure absolute fairness. Historically, minor trends exist between May and November sessions, with November boundaries occasionally hovering slightly higher due to smaller, highly prepared cohorts.

Official grade boundaries are confidential and are released by the IBO directly to IB coordinators via the IBIS portal immediately after results day. They can later be found in subject reports on ibo.org. Note that this calculator uses the latest available boundaries to ensure high-fidelity predictions.