IB Diploma Programme: Key Terms Explained for Parents
IB Diploma: What parents need to know
The International Baccalaureate (IB) Diploma Programme (DP) uses many acronyms and terms. This guide explains the essentials so you can support your child effectively.
The core structure
Students take six subjects plus the IB core (Extended Essay, Theory of Knowledge, CAS). Subjects are chosen from six groups. Most subjects are available at two levels.
HL and SL
| Term | Meaning | Teaching hours | Typical choice |
|---|---|---|---|
| HL | Higher Level | 240 hours | 3 subjects; deeper study |
| SL | Standard Level | 150 hours | 3 subjects; broader exposure |
Students take 3 HL and 3 SL subjects. HL is more demanding and better suited to subjects they enjoy or need for university.
The IB core
| Term | Meaning | What it involves |
|---|---|---|
| EE | Extended Essay | 4,000-word research essay in one subject |
| TOK | Theory of Knowledge | 100 hours; explores how we know what we know |
| CAS | Creativity, Activity, Service | 150+ hours of activities outside the classroom |
All three must be completed to receive the diploma.
Assessment terms
| Term | Meaning |
|---|---|
| IA | Internal Assessment—coursework marked by teachers, moderated by IB |
| EA | External Assessment—exams and some coursework marked by IB examiners |
| Predicted grades | Teacher predictions used for university applications |
Grades and points
- Each subject is graded 1–7
- TOK and EE together contribute up to 3 points
- Maximum 45 points (42 from subjects + 3 from core)
- Minimum 24 points (with other conditions) to pass the diploma
How Tutopiya helps
Tutopiya supports IB students with subject tutors and guidance on the core. Explore IB resources or book a free trial.
Source: IB Diploma Programme
Ready to Excel in Your Studies?
Get personalised help from Tutopiya's expert tutors. Whether it's IGCSE, IB, A-Levels, or any other curriculum — we match you with the perfect tutor and your first session is free.
Book Your Free TrialWritten by
Tutopiya Team
Related Articles
How IB DP Chemistry Students Can Turn Weak Topics Into a Clear Revision Plan
A practical guide to turning weak IB DP Chemistry topics into a clearer revision plan using diagnosis, prioritisation, and active recall tools.
How to Build a Revision Workflow for IB DP Biology Using Free Tools
A practical guide to building an IB DP Biology revision workflow using free tools for recall, weak-topic diagnosis, and structured planning.
How to Use the IB Physics Data Booklet Effectively
A practical guide to using the IB Physics data booklet properly in exams and revision. Learn what it includes, common mistakes, and how to use it to gain marks faster.