How to Get 45 in IB Diploma: The Complete Perfect Score Guide

Learning how to get 45 points in IB diploma is really about learning how to score 45 in IB diploma consistently, across six subjects and three core components, rather than chasing one lucky exam sitting. A perfect IB score is achieved by only a small fraction of the roughly 200,000 diploma candidates who sit exams each session. It is not reserved for a handful of naturally gifted students. It is the result of a system, applied consistently across six very different subjects and three demanding core components. This guide breaks down exactly what that system looks like, subject group by subject group, so you know precisely where to focus your effort instead of guessing.

Before setting your final target, read our guide to what counts as a good IB score and review the full IB Diploma requirements and passing conditions.

What Does a 45 in IB Actually Mean? The IB Grading System Explained

So how many points is a 45 in IB, exactly? With the IB grading system explained simply, the IB Diploma score is built from two parts. The first is your six subjects, each graded on a 1 to 7 scale, giving a maximum of 42 points. The second is your core, made up of the Extended Essay (EE) and Theory of Knowledge (TOK), which together contribute up to 3 additional bonus points based on a combined grade matrix. Add 42 and 3, and you get IB 45 points, the maximum possible score.

• 7 x 6 subjects = 42 subject points
• EE and TOK combined grade = up to 3 bonus points
• CAS (Creativity, Activity, Service) does not add points directly, but it must be completed for the diploma to be awarded at all, regardless of how high your subject scores are

You can also use our Learning Plan Calculator to plan the tutoring hours and support needed for your target IB score.

How Rare Is a 45 in IB, Really?

This is worth knowing early, because it resets the pressure in the right direction. So what percentage of IB students get 45 in a typical session? Historically, it has stayed below 1 percent of the global cohort, which is exactly why a perfect IB score carries so much weight with universities. You do not need a 45 to get into a top university. Oxford and Cambridge typically ask for 38 to 40+ with specific Higher Level requirements, and most Russell Group universities are satisfied with 35+. Aiming for IB 45 points is still a completely reasonable goal if you want it, but it should be a personal target built on a solid system, not a number you chase out of anxiety.

Building the Right Foundation Before You Start

Every 45-point scorer we have worked with shares one habit before anything else: they treat the first year of the Diploma Programme as a foundation year, not a warm-up. The habits, note-taking systems, and subject instincts you build in Year 1 are what carry you through the pressure of Year 2.

• Read the full subject guide for each course, not just the subject brief, so you know exactly what can be examined.
• Start your Extended Essay topic exploration in Year 1, even informally, so you are not choosing a topic under deadline pressure.
• Identify your one or two weakest subjects honestly, and give them extra time from week one rather than after the first bad test.
• Set up a single system for organising notes, past papers, and IA drafts so nothing gets lost across six subjects at once.

The Two-Year Timeline: Year 1 and Year 2

Year 1: Foundation

• Focus on mastering syllabus content and building strong subject fundamentals rather than exam technique.
• Begin CAS activities early and log them consistently, since leaving CAS until Year 2 creates unnecessary stress.
• Draft your Extended Essay research question and start early reading around the topic.
• Use every test and quiz as practice for identifying gaps, not just a grade to react to.

Year 2: Execution

• Shift from learning new content to active recall, past papers, and timed practice under real exam conditions.
• Treat mock exams exactly like final exams. Your mock results are the clearest signal of where marks are being lost.
• Finish the Extended Essay and TOK essay early in the year so the final months are free for subject revision.
• Review every past paper against the official mark scheme, not just to check answers, but to learn the phrasing examiners reward.

Subject-by-Subject Strategy for a 45

Generic revision advice fails in the IB because you are managing six subjects that reward completely different skills at the same time. A history essay and a physics data-based question are marked on entirely different criteria. The IB 45 point scorers tips below are broken down by subject group so you can apply the right IB revision strategy to the right subject, instead of using one method everywhere.

Sciences: Biology, Chemistry, Physics, Computer Science

• Build a syllabus checklist and write notes under each syllabus point exactly as worded, since exam questions are drawn directly from that language.
• Practise past paper data-based and extended-response questions weekly once core content is covered, and compare your phrasing to the official mark scheme.
• For lab-based Internal Assessments, choose a research question with genuine depth early, since a rushed IA in these subjects is one of the most common reasons students lose marks.
• If a topic keeps costing marks in mocks, work through it with a specialist. Our IB Biology tutors, IB Chemistry tutors, IB Physics tutors, and IB Computer Science tutors are IB examiners who know exactly what each mark scheme rewards.

Mathematics: Analysis and Approaches (AA) and Applications and Interpretation (AI)

• Prioritise volume of practice questions over rewriting notes. Maths at this level is a skill built through repetition, not memorisation.
• Keep a running list of question types you consistently get wrong, and revisit that list weekly rather than only before exams.
• For AA, focus on proof-style and multi-step algebraic reasoning. For AI, focus on modelling, statistics, and technology-based problem solving.

Structured, one-on-one support makes the biggest difference in Maths. Explore our IB Mathematics tutoring for both AA and AI pathways.

Individuals and Societies: Business Management, Economics, ESS, Psychology

• Build essay plans for likely exam themes rather than writing full essays for every topic. Memorise the structure, not the exact wording.
• Learn examiner command terms (evaluate, discuss, to what extent) precisely, since misreading the command term is one of the most common ways strong students lose marks.
• Use real-world case studies and current examples in your answers. Examiners consistently reward applied, specific evidence over generic theory.

For subject-specific guidance, our IB Business Management tutors, IB Economics tutors, and IB Psychology tutors work directly from current mark schemes and examiner reports.

Language and Literature: English

• Prepare a bank of memorised, precisely chosen quotations for each text, rather than trying to remember entire passages.
•     Practise unseen commentary papers under timed conditions and get them marked, since this is the paper most students under-prepare for.
• Focus on structuring arguments around the question asked, not around everything you know about the text.

Mastering the Core: EE, TOK, and CAS

The Extended Essay is a 4,000-word independent research paper, externally marked and graded A to E, and it must reach at least a D for the diploma to be awarded. TOK is assessed through a 1,600-word essay and an internally assessed exhibition. Your IB Extended Essay and TOK points come from the same combined grade matrix, so neither component can be treated as an afterthought if 45 is the goal.

• Choose an Extended Essay topic you can sustain genuine interest in for a full year, not one that only sounds impressive.
• Plan for at least four to five full drafts of the EE, with feedback acted on after each one.
• Treat the TOK exhibition prompts seriously early, since students often underestimate how much time strong TOK work actually takes.

If you are stuck on structuring an EE or TOK response, our Guidance and Support sessions are built specifically for detailed feedback on Internal Assessments and Extended Essays.

Building an IB Study Routine That Actually Works

There is no single perfect IB study schedule, but the students who consistently score at the top tend to structure their days in a similar rhythm and follow the same IB study routine week after week.

• Morning: tackle your most demanding subject or topic while your focus is sharpest, using active recall rather than rereading notes.
• Afternoon: dedicate time to IAs, TOK, and the Extended Essay, since these require sustained analytical focus.
• Evening: consolidate the day with quick review, such as summarising concepts aloud or testing yourself on flashcards.
• Weekly: rotate subjects daily to avoid burnout on any one topic, and schedule at least one evening that is fully protected for rest.

What Separates a 44 from a Perfect 45

The IB 45 vs 44 difference usually comes down to a handful of specific habits rather than raw ability. Here is where that gap actually shows up.

Common Mistakes That Keep Students at 44 or Lower

• Relying on rereading notes instead of active recall, which feels productive but rarely holds up under exam pressure.
• Treating the Extended Essay or TOK as secondary to the six subjects, when they are worth a full three points on their own.
• Ignoring the specific command terms and marking criteria for each subject, and writing answers that are correct but not structured the way examiners are trained to reward.
• Ignoring feedback from mock exams instead of reviewing every lost mark and correcting the pattern behind it.
• Studying every subject the same way, instead of matching the method to what each subject actually rewards.

Working with a Certified IB Examiner or Tutor

Students who work with tutors who have direct examining experience tend to close their weakest subject gaps faster, because feedback is based on how a real IB examiner reads an answer, not just whether the content is technically correct. Students working with our team have improved from a grade 4 to a 6 in Psychology, moved a Biology grade up to a full 7, and lifted an overall Diploma score to 38 with a 7 in Business Management, through structured, subject-specific feedback rather than generic revision advice.

You can see full details of our tutoring formats on our IB Tutoring Services page, meet our team on the Featured Tutors page, or check current rates on our Pricing page.

Staying Well While Aiming for a 45

Chasing a perfect score at the cost of sleep, exercise, and downtime tends to backfire in the final months, which is exactly when consistency matters most. Build rest into your schedule on purpose rather than treating it as something you earn only after the work is done. Short, protected breaks between study blocks, one evening a week fully off, and a proper night’s sleep before exams consistently outperform last-minute cramming for the students who reach the top of the grade scale.

Frequently Asked Questions