What subjects are tested in the PADI Instructor Exam (IE) written exams?

The PADI Instructor Exam includes written papers on six subjects: Dive Physics, Dive Physiology, Dive Equipment, Skills and Environment, the Recreational Dive Planner (RDP/eRDPml), and PADI Standards and Procedures. Candidates must pass all six to qualify as a PADI Open Water Scuba Instructor (OWSI).

How hard is the PADI IDC theory exam?

The PADI Instructor Exam written papers require a pass mark of 75% in each subject. Physics and RDP calculations are where most candidates lose marks. Structured study using practice questions with worked explanations — particularly those written by an experienced Course Director — significantly improves pass rates.

What is the best way to prepare for the PADI IDC written exams?

The most effective approach is topic-by-topic study followed by timed practice exams under exam conditions. Go Pro Caribbean's Dive Theory Learning Centre breaks each subject into digestible sections with worked examples and video explanations, developed by PADI Platinum Course Director Will Welbourn.

PADI Divemaster and Instructor Exam, Dive Theory Learning Centre

Use the buttons below to choose your subject.

Physiology

Physics

Equipment

Skills and the Environment

Recreational Dive Planner

PRACTICE STANDARDS EXAM LINK BELOW

You can also do a 20 Question practice standards quiz here