Internal Assessments (IA) for the International Baccalaureate (IB)
Download printable cheat-sheet (CC-BY 4.0)12 Jul 2025, 00:00 Z
Join our Telegram study groupQ: What does Internal Assessments (IA) for the International Baccalaureate (IB) cover?
A: A clear, parent- and student-friendly roadmap to the 2025 IB Internal Assessment: mark-scheme anatomy, STEM-savvy topic hacks.
TL;DR
Every IB Diploma subject sets an Internal Assessment worth 20 % of the final grade in Physics, Chemistry, Biology and both Mathematics courses. It is marked on five universal criteria-Personal Engagement, Exploration, Analysis, Evaluation, Communication-totalling 24 marks. Schools must devote ≈ 10 timetabled hours to the work, and successful reports stay within 6-12 pages . Early scoping, spreadsheet fluency and sound uncertainty budgets are the biggest levers. This post shows IP students when to start, how to pick Physics- and Maths-friendly investigations, and where specialist tuition plugs the LINEST + gaps.
1 | What the IA Is -and Why Integrated Programme (IP) students Should Care
- Mini-thesis inside the diploma. One individually written investigation per subject, marked by the teacher, then moderated by the IB; 20 % of the course grade for Group 4 Sciences and Group 5 Mathematics.