Are IB predicted grades calculated with a fixed formula?

Not usually. The IB does not publish one universal formula schools must follow. Most teachers combine mock results, class assessments, and IA evidence, then align that picture with grade descriptors and boundaries. Some departments standardise internally so predictions across classes feel consistent. That is why two schools can predict differently even if students look similar on paper. The best move is to ask your teacher what evidence they are using and what would change the prediction.

Do IA drafts really affect IB predicted grades?

They can, especially when your IA is a clear indicator of where you will land against criteria. In the IB, teachers are trained to think in rubrics, not vibes. A strong draft shows understanding, structure, and command of the assessment language. It also signals that your final submission will likely be solid after feedback and refinement. If your IA is messy or unfinished, teachers may predict more cautiously because it introduces risk. Use RevisionDojo’s Grading tools and Coursework Library to make your draft easier to assess and improve.

Can I challenge my IB predicted grades?

Sometimes, but it depends on your school’s policy and the submission timeline. In many IB schools, predictions can be reviewed if you bring new evidence before the deadline. The key is to stay respectful and specific: ask what evidence was used, what performance would justify a higher prediction, and which next assessment could move it. Do not argue in generalities like “I work hard.” Bring measurable proof: timed responses, marked questions, and improved mock sections. If you need a structured improvement plan, RevisionDojo’s Mock Exams, Predicted Papers, Flashcards, and AI Chat help you produce that evidence quickly.

How Are IB Predicted Grades Calculated?

RevisionDojo Team

•Last updated: 19 Jul 2026•5 min read

Predicted grades can feel like a verdict delivered before the story ends.

One day you are just doing IB homework and surviving deadlines. The next, a number is attached to you, sent to universities, and discussed like it is a preview of your future. But predicted grades are not magic, and they are not random. In most schools, IB predicted grades come from a repeatable set of evidence teachers trust.

Teacher flowchart for predicted grades (XKCD comic)

What predicted grades mean in the IB

In the IB, predicted grades are your teachers’ best estimate of the grade (1–7) you are likely to earn in each subject, plus core predictions for TOK and the Extended Essay. They are used for applications and early decisions, long before final results exist.

If you want the bigger context of how these numbers get used, see How Much Do Predicted Grades Actually Matter?.

Quick checklist: what teachers usually use

Most IB departments combine several inputs:

Your performance on tests, quizzes, and in-class tasks
Your trajectory over time (improving, stable, or inconsistent)
Mock exams or timed school exams
Internal Assessment (IA) progress and rubric-based marks
Comparison to historical IB grade boundaries and descriptors
Teacher standardisation and professional judgement

How IB predicted grades are calculated in practice

Class evidence (the quiet majority)

Teachers look at what you do repeatedly, not just once. In the IB, consistency signals whether you can reproduce a level of performance under pressure. Homework quality, topic tests, and written responses build a pattern that is hard to ignore.

When you need a faster feedback loop than waiting for the next school test, RevisionDojo’s Questionbank and Study Notes help you turn “I studied” into “I can score.” You can also explore the broader workflow in RevisionDojo App: The Smarter Way to Prep for IB Exams.

Mock exams and timed performance

Many schools lean heavily on mocks because they resemble the external IB assessment style and timing. A strong mock is persuasive evidence, especially if it is recent and taken under realistic conditions.

If mocks are coming up, use How to Study for IB Mocks (Without Burning Out) to build a plan you can actually sustain.

Two students and two revision strategies (XKCD comic)

IA progress and coursework signals

Your IA is not “extra.” In the IB, it is part of your final grade, and teachers often use your drafts to judge research skill, analysis, and criterion awareness. A well-structured draft can lift a prediction because it shows you can meet the rubric.

If you are unsure what a strong IA looks like, start with IB IA Guides and the overview IB Internal Assessment: A Complete Guide.

Grade boundaries and “where your mark lands”

Teachers often map your raw marks to historical IB grade boundaries. This is not perfect (boundaries shift by session), but it is a practical calibration tool.

If you want to estimate your total quickly using boundaries, try the IB Grade Calculator.

Literal grade boundary fence (XKCD comic)

Can predicted grades differ from final IB results?

Yes. In the IB, predicted grades are an evidence-based snapshot, not a guarantee. Final grades can rise with better exam technique, stronger recall, and calmer timing. They can also drop if revision is passive or if performance changes under pressure.

If your predicted grades hit harder than expected, read IB Predicted Grades Missed? What to Do Next for a practical reset.

Final thought: make the prediction earn its keep

In the IB, predicted grades are not a prophecy. They are feedback written in numbers.

If you want those numbers to move, build a simple loop: learn with Study Notes, drill with the Questionbank, lock recall with Flashcards, pressure-test with Mock Exams and Predicted Papers, then refine using AI Chat, Tutors, and Grading tools. Start today on RevisionDojo and turn your IB prediction into a plan.