IB vs A-Level: how tutoring support differs

Two different shapes of qualification

The IB Diploma Programme is a single integrated qualification for students aged roughly 16 to 19. Candidates take six subjects — one from each of Groups 1 to 5, plus either an arts course from Group 6 or an additional subject from Groups 1 to 4 — with three or four at Higher Level (a minimum of 240 instructional hours each) and the rest at Standard Level (a minimum of 150 hours).

A-Levels are separate, individually awarded qualifications. Students typically take three or four subjects, three being the standard minimum for university admission. There is no equivalent of the IB core, no breadth requirement, and no single aggregate score.

That structural difference drives everything else. An IB student is managing a portfolio with a shared deadline structure; an A-Level student is managing three or four independent syllabuses.

The IB core has no A-Level equivalent

Every IB Diploma candidate must complete three core components: the Extended Essay, an independent research paper of up to 4,000 words on an approved topic; Theory of Knowledge, a course on the nature and limits of knowledge requiring around 100 hours; and CAS — Creativity, Activity, Service — running at roughly 3 to 4 hours a week across two years.

The core carries real weight. Subjects are graded 1 to 7, and the core contributes up to 3 additional points, giving the familiar 45-point maximum. A diploma requires at least 24 points, with at least 12 from Higher Level subjects and 9 from Standard Level, plus completion of the core. Failing conditions include any grade of 1, more than three grades of 3 or below, or a grade E in Theory of Knowledge or the Extended Essay.

That last clause matters more than families expect. A student can perform respectably across six subjects and still fail the diploma on an Extended Essay grade. Tutoring for the Extended Essay and Theory of Knowledge is therefore not an optional extra — for some students it is the highest-leverage intervention available, and it requires a tutor who has supervised the components rather than one who is merely a strong subject specialist.

• Extended Essay — up to 4,000 words, independently researched
• Theory of Knowledge — around 100 hours of instruction
• CAS — roughly 3 to 4 hours weekly across two years
• Core contributes up to 3 of the 45 available points

Assessment rhythm: continuous versus terminal

IB assessment splits between external examinations, sat in May and November sessions worldwide, and internal assessment — oral presentations, practical work or written assignments making up between 20% and 50% of a subject grade, marked by teachers and then moderated by the IB.

A-Levels moved the other way. The 2015 reforms replaced the modular AS/A2 structure with a linear one in which students sit all examinations at the end of the second year, and AS-Level became a standalone qualification that no longer contributes to the A-Level grade.

The tutoring consequence is significant. IB support is spread across two years, with internal-assessment deadlines forming natural intervention points where a few hours of help materially change a component mark. A-Level support concentrates toward terminal examinations, where exam technique, timing and question selection dominate. A tutor used to one rhythm will plan badly for the other.

Grading scales and what a tutor must know

A-Levels are graded A* to E, with U for unclassified; the A* was introduced in 2010. Qualifications and examinations in England are regulated by Ofqual, and the specifications are set by awarding bodies — AQA, OCR, Pearson Edexcel, WJEC/Eduqas and CCEA — each with its own papers and mark schemes.

This is where a specific question becomes essential: which board? A-Level Chemistry with AQA and with OCR are not the same course in practice. A tutor who knows the specification, the mark scheme conventions and the recurring question formats of your board is worth substantially more than a generically strong chemist.

For IB, the equivalent question is level and route: Higher or Standard, and for mathematics, Analysis and Approaches or Applications and Interpretation. These are genuinely different courses, and conflating them is one of the most common mismatches in IB tutoring.

What to ask for, by system

Briefly, the questions that filter effectively in each system.

• IB — which subjects and levels have you taught, and have you supervised Extended Essays or taught Theory of Knowledge?
• IB — have you marked or moderated internal assessment, and for which subjects?
• A-Level — which board and specification, and have you examined for it?
• A-Level — which recent series do you know well, and what changed in them?