Introduction
Many IB students look at the exam timetable and immediately ask:
“Why is one of my exams in the morning and another in the afternoon?”
This question often leads to:
- Stress about early starts
- Comparisons with friends in other subjects
- Worry that certain sessions are “harder”
The truth is that morning vs afternoon exam placement has nothing to do with difficulty or importance. It’s a logistical decision based on global scheduling, exam security, and subject structure.
This article explains why some IB exams are scheduled in the morning and others in the afternoon, and how students should adapt their preparation accordingly.
How the IB Decides Morning vs Afternoon Sessions
The IB schedules exams globally, not locally.
Each day is split into:
- A morning session
- An afternoon session
These sessions allow the IB to:
- Run multiple subjects per day
- Reduce worldwide clashes
- Maintain exam security across time zones
Session placement is about coordination, not student preference.
Factors That Influence Session Placement
Several practical factors affect whether an exam is placed in the morning or afternoon:
- Subject combinations taken worldwide
- The number of candidates for a subject
- Paper length and structure
- Avoiding major subject clashes
High-candidature subjects are often spread across sessions to prevent too many students sitting exams at the same time.
