CHST & OHST Exam Prep

Prepare for the Construction Health and Safety Technician (CHST®) and Occupational Hygiene and Safety Technician (OHST®) exams with a focused practice app for safety professionals. CHST & OHST Prep combines practice exams, topic drills, flashcards, teaching explanations, and progress insights so you can turn missed questions into a smarter study plan.

Study your way:

• Take timed or untimed practice exams
• Practice by subject, topic, or mixed readiness
• Review answers with teaching explanations
• Focus on weak areas and revisit missed questions
• Save bookmarks and personal notes
• Use flashcards for quick daily review
• Set an exam date and follow a personalized study plan
• Track accuracy, topic coverage, and progress
• Study core content offline after installation
• Use the built-in calculator during math-focused practice

Review key safety areas including construction health and safety, occupational hygiene and safety, safety program management, worksite controls, worker protection, exposure and equipment controls, training, communication, recordkeeping, and professional practice. The catalog also includes broader safety foundations for additional review.

Optional PRO access removes ads and unlocks expanded practice, answer reviews, readiness insights, the full study plan, smart repetition, bookmarks, and notes. Available features and purchase terms are shown in the app.

CHST & OHST Prep is an independent, unofficial study tool. It is not affiliated with or endorsed by BCSP, OSHA, NIOSH, ISO, or any other certification or standards organization. It does not contain actual certification exam questions and does not guarantee exam results. Confirm current eligibility, blueprints, standards, and examination details with official sources.