IB Exam Revision Schedule｜How to Plan Multiple Subjects & Core Together
Balancing six subjects across HL and SL while managing Core deadlines makes IB revision unlike any other exam prep. This guide walks you through building a realistic, structured schedule with ready-to-use templates.
The Short Answer: Build One Master Calendar Before You Do Anything Else
If there is a single habit that separates students who finish exam season feeling prepared from those who scramble through it, it is this: create one unified revision calendar that holds every subject, every Core deadline, and every mock exam on the same page. Without that bird's-eye view, it is almost impossible to notice when three Past Paper sessions, a TOK draft, and a Biology IA revision are all due in the same week—until that week has already arrived.
This article walks you through a practical, phase-by-phase approach to building and maintaining that calendar across a typical IB revision period. The exact timeline varies by school; always confirm key dates with your coordinator.
Why Is Revising Multiple IB Subjects at Once So Difficult?
The IB Diploma is deliberately designed to be broad. You are studying six subjects simultaneously, each with its own assessment logic—some leaning on essays, some on data analysis, some on problem sets—while also managing the Extended Essay (EE), Theory of Knowledge (TOK), and CAS. The cognitive load is genuine.
Three specific tensions make multi-subject revision hard:
- Depth vs. breadth pull. HL subjects demand the kind of deep understanding that takes sustained hours, but breadth across six subjects means you cannot afford to live inside one subject for weeks at a time.
- Core vs. subject competition. TOK and EE do not disappear during the revision period unless you have already finished them. Students who leave Core work unresolved find that it bleeds into prime revision time.
- Stamina without a clear endpoint. Unlike a single-exam course, IB finals stretch over several weeks. Energy management matters as much as content knowledge.
Recognising these tensions is the first step to planning around them rather than being surprised by them.
How Do You Build the Initial Monthly Roadmap?
Start roughly 3–4 months before your first final exam. The goal at this stage is not a perfect hour-by-hour schedule—it is a reliable macro-map that prevents collisions.
Step 1 — Gather Every Fixed Date
Open a blank calendar (digital or paper—whichever you will actually use) and add:
- All final exam dates, including subjects and approximate times of day
- Mock exam dates and any school-set deadlines
- Core submission deadlines: TOK Essay, TOK Exhibition, EE final submission
- Any remaining IA deadlines still outstanding
- Public holidays and school breaks
Step 2 — Work Backwards from Exam Dates
For each subject, mark a "content complete" target—the date by which you want all syllabus content reviewed at least once. Aim to hit this a few weeks before the exam itself, so the final stretch is pure practice rather than first-time learning.
Working backwards also reveals bottlenecks: if Chemistry HL and Mathematics AA HL exams fall close together and both have dense syllabi, you will need to front-load those subjects earlier.
Step 3 — Colour-Code by Category
A simple colour system makes the calendar readable at a glance:
| Colour | Category |
|---|---|
| Blue | HL subjects |
| Green | SL subjects |
| Orange | Core (TOK / EE / CAS) |
| Red | Fixed deadlines / exams |
| Yellow | Buffer / catch-up days |
Buffer days are not wasted days. They are the structural insurance that keeps your plan working when real life—illness, a slow topic, a bad week—intervenes.
How Should You Allocate Time Between HL and SL Subjects?
As a general principle, HL subjects warrant more weekly revision time than SL subjects, both because the content is more extensive and because HL performance tends to carry more weight in university admissions. The exact split is personal—your starting strengths, your school's curriculum emphasis, and your target outcomes all matter—but a few guidelines hold broadly:
- Identify your highest-risk subjects: those where your current understanding is weakest relative to what is required. These get priority regardless of HL/SL status.
- Avoid the trap of over-revising subjects you already find comfortable. It feels productive but yields diminishing returns.
- Review your teacher's feedback on any IAs or practice essays. Patterns in that feedback often reveal exactly which topic areas need the most work.
For science HL subjects with heavy conceptual content, consider looking at structured revision resources. Our IB Biology HL guide and IB Physics HL guide both cover how to prioritise topics without relying on rote memorisation—useful models for any content-dense subject.
Suggested Weekly Time Distribution (Illustrative Only)
The table below shows a rough structural approach, not fixed numbers. Adjust based on your subject count, strengths, and school schedule.
| Subject Type | Relative Weekly Priority | Notes |
|---|---|---|
| HL subjects (higher risk) | Highest | Front-load during content review phase |
| HL subjects (lower risk) | Medium-high | Maintain with regular Past Paper practice |
| SL subjects (higher risk) | Medium | Do not neglect; SL grades still matter |
| SL subjects (lower risk) | Lower | Maintenance mode: one session per week |
| Core (TOK/EE) | Minimal by revision period | Should be near-finished before this phase |
When Should You Tackle TOK and EE So They Don't Derail Revision?
The clearest answer: both should be in final or near-final form before your intensive revision period begins.
If you are starting your schedule 3–4 months out, TOK and EE deadlines typically fall before or at the very start of that window. That means:
- If the TOK Essay or EE still has significant writing left, address it immediately—before you design your subject revision blocks.
- If submissions are already done or pending minor edits only, you can treat Core as essentially complete and plan accordingly.
Students who delay EE revisions into the final stretch of exam preparation typically describe the same experience: the essay hijacks weeks that were meant for subject review, and the resulting stress compounds across everything.
For a full walkthrough of EE planning and timeline, see our Extended Essay guide. For TOK-specific strategy, the TOK complete guide covers both the Essay and Exhibition in detail.
What Does a Well-Structured Weekly Revision Block Look Like?
Once your monthly roadmap is set, zoom in to the weekly level. A useful structure organises each week around three recurring phases rather than subject-by-subject blocks:
Phase 1 — Content Review (Early in the Week)
Work through topics that still feel unfamiliar or shaky. This is not re-reading notes passively; it is active recall: closing the textbook and writing down what you remember, then checking. Subject guides tell you exactly what is examinable—use them as checklists, not textbooks.
Phase 2 — Timed Past Paper Practice (Mid-Week)
Introduce Past Papers earlier than you think you need to. Many students save them for the last few weeks and then find that exam technique—managing time per question, structuring responses under pressure—needs more practice than expected. Timed Past Paper sessions mid-week build stamina gradually.
Past Papers are also the fastest way to discover which topics are actually weak versus which ones just feel uncomfortable. See our Past Paper and markscheme strategy guide for how to extract maximum value from each session.
Phase 3 — Targeted Weak-Spot Work (Later in the Week)
After reviewing Past Paper answers against the markscheme, identify the specific question types or concepts where marks were lost. Dedicate the third phase to those specifically. This is more efficient than general review because it is driven by evidence.
The 30-Minute Weekly Review
At the end of each week—Friday evening or Sunday morning, wherever it fits—spend 30 minutes reviewing:
- Which sessions ran over or under?
- Which subjects still feel underprepared?
- Does anything need to shift in next week's plan?
This weekly review is what transforms a static schedule into a living, adaptive plan.
How Do You Stay Consistent Without Burning Out?
Consistency over six-plus weeks is harder than it sounds. A few structural habits help:
Build in variety across the week. Spending a full day on a single heavy subject is exhausting and often less effective than splitting your day between one intensive HL subject and one lighter SL review. Cognitive variety helps retention.
Protect at least one longer rest period per week. This is not a concession to laziness—it is a recovery mechanism that keeps the other six days functional. Students who plan rest in advance are less likely to lose whole days to unexpected burnout.
Track completion, not hours. A session is "done" when the planned task is complete, not when the clock hits a round number. This keeps you focused on output rather than time-in-chair.
Talk to your teacher before adjusting major priorities. If you are considering dropping significant revision time from a subject because you feel confident, ask for a teacher's perspective first. Subject teachers see patterns across many students and can often flag whether your self-assessment is accurate.
For a deeper treatment of balancing IA work, EE, and exam prep across the full IB programme, the IB time management guide covers the broader scheduling landscape.
A Final Note on Assessment Rules and Deadlines
Assessment components, submission formats, and internal deadlines vary by school, cohort, and examination session. Before finalising any revision plan:
- Cross-check the current Subject Guide for each of your subjects (available via your school or the IBO)
- Confirm all Core submission dates with your IB coordinator
- Ask subject teachers about any school-level adjustments to timelines
Nothing in this article should substitute for that direct verification. The structure above is a framework; your school's specific calendar is the ground truth.
If you find that building and sticking to this kind of multi-subject plan is harder in practice than in theory, working with a tutor who has been through the IB themselves can make a significant difference—both for accountability and for subject-specific revision strategy. That is exactly what the team at Quick IB offers.