The night before results day, most IB students do the same strange thing: they start doing math.
Not the kind with calculus or vectors. The anxious kind.
You replay Paper 2 in your head and convert vibes into numbers. You estimate how many marks you lost on that one question you couldn’t finish. You wonder if your Internal Assessment will save you or sink you. And somewhere in that spiral, the IB stops feeling like a course and starts feeling like a scoreboard.
This guide is here to slow that down.
In this Ultimate Guide to the IB scoring system, you’ll learn how IB points are actually built (and lost), what the 1--7 grades mean, how TOK and the Extended Essay add bonus points, what “grade boundaries” really do, and the most reliable ways to raise your IB score before exams.
IB scoring system overview (save this checklist)
If you want the whole IB scoring system in one mental snapshot, keep this:
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The IB Diploma is scored out of 45 points.
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You take six subjects.
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Each subject is graded 1 to 7 (max 42 from subjects).
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TOK and the Extended Essay can add 0 to 3 bonus points.
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CAS is mandatory but does not add points.
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To earn the diploma you usually need at least 24 points plus key conditions.
When you want a quick estimate from practice marks, use the IB Grade Calculator.
How the IB scoring system works (the 45-point picture)
The most important idea is simple: the IB is not trying to measure “how smart you are.” It’s measuring whether you can produce specific evidence of learning under specific conditions.
That’s why the IB scoring system is built in layers.
IB subject grades: 6 subjects, each scored 1--7
Each of your six subjects receives a grade from 1 (lowest) to 7 (highest). This is true for both Standard Level and Higher Level subjects.
- Max subject points: 6 × 7 = 42
The hard part isn’t the scale. The hard part is remembering that a 7 is not “perfect knowledge.” In the IB, a 7 is “top-band performance against the markscheme.” That’s a very different target.
If you want to train for that kind of performance, RevisionDojo’s Questionbank is built around exam-style prompts with mark-scheme-aligned feedback.
TOK + Extended Essay: the bonus points that change everything
TOK and the Extended Essay are graded A to E. Their combined result gives you 0 to 3 bonus points.
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Max core points: 3
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Max total score: 42 + 3 = 45
Students often underestimate these bonus points because they’re “only three.” But in practice, three points can be the difference between meeting a university offer and missing it.
For a deeper explanation of how the Extended Essay affects your final IB points, see EE in 2027: How It Adds Points to Your IB Diploma.
IB grading scale explained (and why it’s not a competition)
The IB uses criterion-referenced assessment. That means you’re graded against standards, not against other students.
In plain terms: you’re not “beating” the person next to you. You’re meeting (or missing) the requirements for each markband.
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7: Excellent
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6: Very good
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5: Good
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4: Satisfactory
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3: Mediocre
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2: Poor
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1: Very poor
This is why two students can both get a 7. And it’s why learning examiner habits matters so much.
If you want to see what “markscheme thinking” looks like in daily practice, IB exam-style questions: practice with authentic formats breaks down how questions are built and what the IB rewards.
IB pass requirements (minimum conditions you must respect)
To be awarded the IB Diploma, you typically must:
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Earn at least 24 total points.
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Complete CAS requirements.
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Avoid a grade 1 in any subject.
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Avoid more than two grades of 2.
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Avoid having four or more subjects below grade 4.
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Not receive an E in both TOK and the Extended Essay.
These rules exist to prevent “spiky” results: one brilliant subject cannot fully compensate for widespread weakness.
If you want more context on what scores look like globally (and what universities often expect), read What Is a Good Score in the IB Diploma? Realistic Benchmarks and Global Averages.
IB grade boundaries: how raw marks become 1--7
Grade boundaries are the translation layer between your raw marks and your final grade.
They shift by subject and session to reflect exam difficulty and performance patterns. The goal is fairness: a harder paper should not punish an entire cohort.
A rough example students often use (boundaries vary widely):
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96--100%: 7
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91--95%: 6
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81--90%: 5
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70--80%: 4
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60--69%: 3
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50--59%: 2
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below 50%: 1
The key takeaway: in many IB subjects, you do not need 90%+ to score a 7. You need to reliably earn marks on the most “repeatable” parts of the paper.
To estimate your current grade from practice, again, the IB Grade Calculator is the fastest sanity check.
Practical tips to raise your IB score (without burning out)
The IB rewards calm consistency more than heroic effort.
Here are strategies that map directly to the scoring system.
Study to the markscheme, not the textbook
Textbooks teach content. The IB exams assess performance.
That performance is best trained with exam-shaped practice. A reliable loop is:
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Use concise Study Notes to clarify a topic
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Do targeted Questionbank sets immediately
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Review mistakes as patterns
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Retest within 48 hours
If you want a calm, repeatable system, use IB: How to Get a 7 (A Calm, Repeatable System).
Use time pressure early (in small doses)
Many IB students delay timed work until the final weeks, then discover they “know it” but can’t finish it.
Instead, add timing in layers:
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15-minute mini sets
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30--45 minute sections
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full-paper simulations
RevisionDojo supports this progression with Mock Exams and Predicted Papers, so you can build stamina while keeping feedback tight.
For how to use predictions responsibly, see IB Predicted vs Specimen Papers: What They Mean and explore IB Predicted Papers by IB Examiners (Free).
Treat TOK and the Extended Essay like point insurance
TOK and the Extended Essay can feel separate from “real subjects,” but in the IB scoring system they’re pure leverage.
Use tools that reduce uncertainty:
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Get structure guidance from IB Extended Essay Guides
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Use IB Coursework Grader for rubric-aligned feedback on EE, TOK essays, and many IAs
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When you need it, use RevisionDojo Tutors to diagnose what’s holding your writing back
A smart mindset: your core work is not “extra.” It’s how you protect your total points.
Common misconceptions about the IB scoring system
“HL is graded more harshly than SL”
Not exactly. HL is harder because it asks for more depth and more content, but the grade boundaries and assessment design are built around that. You’re still scored 1--7.
“If I get 24 points, I’m safe”
24 is the diploma minimum in many cases, but it doesn’t automatically mean you’re meeting all conditions, and it may not match university requirements. The IB scoring system is points plus rules.
“Bonus points don’t matter”
Three points can change your entire outcome. In the IB, small numbers can have large consequences.
Closing: treat the IB scoring system like a map, not a verdict
The IB can feel personal because you put so much of yourself into it. But the IB scoring system is not a personality test. It’s a set of rules and rubrics that reward visible evidence: clear method, correct terminology, and answers shaped the way examiners can credit.
When you understand how IB points work, you stop guessing. You start managing.
If you want one place to run that management loop, RevisionDojo is built for IB students preparing for exams: Questionbank, Study Notes, Flashcards, AI Chat, Grading tools, Predicted Papers, Mock Exams, Coursework Library, and Tutors when you need human strategy.
Your goal isn’t to feel confident all the time. It’s to build proof, one practice set at a time, that your next IB score will be higher than your last.