ROH Exam Preparation

Free Sample Lesson - ROH Essay-Style Preparation Program

Watch a sample lesson from the ROH Essay-Style Preparation Program. This lesson uses sample questions from the CRBOH ROH Examination Handbook to demonstrate how broad occupational hygiene scenarios can be broken down into clear components, organized into a structured answer, and developed into a defensible professional response.

The full program expands this approach across exposure assessment, control strategy, program design, incident investigation, and regulatory/ethical scenarios.

ROH Essay-Style Preparation Program

The essay-style component is one of two equally weighted components of the ROH Part I written examination.

Essay questions are broad in nature and often require integration of multiple occupational hygiene competency areas within a single answer. This program helps participants develop the depth of knowledge, breadth of reasoning, professional judgment, and structured written communication needed to analyze occupational hygiene scenarios and produce clear, defensible answers.

Program Content

6 learning modules
15 focused sections
4.5 hours of video instruction

Practice Material

5 high-yield written scenarios
Detailed model-answer analysis
Structured response guidance

Review & Completion

3 post-assessment exercises
1-year access to course materials
Certificate of Completion

ROH Multiple-Choice Preparation Program

The multiple-choice component is one of two equally weighted components of the ROH Part I written examination.

This training program is designed to strengthen the factual and technical occupational hygiene knowledge required across the published ROH competency areas, with emphasis on technical concepts, definitions, calculations, and applied fundamentals required for success on the multiple-choice portion of the examination.

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MCQ Knowledge Focus

Core occupational hygiene knowledge
Technical concepts and definitions
Calculations and applied fundamentals

Program Structure

Published ROH competency areas
Individual competency modules
Self-paced learning progression

Learning Approach

Video-based instruction
Participatory learning activities
Knowledge checks and self-assessments

ROH Oral Examination Coaching

One-on-one coaching for candidates preparing for Part II of the ROH examination, including those awaiting Part I results or those invited to the oral interview. Coaching focuses on scenario-based oral practice, problem-solving, professional judgment, and clear verbal communication.

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Session Format

60-minute one-on-one session
Scenario-Based Oral Practice
Structured feedback

Practice Focus

Verbal responses to questions and scenarios
Problem-solving and professional judgment
Clear technical communication

Feedback Areas

Response structure and clarity
Technical reasoning and judgment
Communication during discussion

Preparing for the ROH Examination

The Registered Occupational Hygienist (ROH) designation represents advanced occupational hygiene knowledge, professional judgment, practical experience, and commitment to ethical practice and continuing professional development.

The ROH examination process evaluates more than memorized information. It assesses the ability to apply occupational hygiene principles, integrate technical knowledge, exercise professional judgment, and communicate defensible conclusions in practice-based situations.

Part I – Written Examination

The ROH written examination consists of two equally weighted components:

Multiple-Choice Component
Essay-Style Component

A passing grade must be achieved in each component to successfully complete Part I.

Part II – Oral Examination

Part II is an oral interview for individuals who successfully complete Part I. The interview evaluates:

Problem-solving skills
Professional judgment
Communication skills

The oral examination is approximately one hour in duration.

EHS Occupational Health & Safety training resources are designed to support preparation for the ROH examination through practical, competency-informed learning, real-world occupational hygiene examples, and structured professional reasoning.