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Public Health

Professional assessments for public-health practice and population-health roles.

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Validate public-health competence

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Compare eligibility, population-health scope, and professional use

ExamQuestions & time

Certified in Public Health (CPH) ExamCPH Exam · NBPHE

200 questions: 175 scored and 25 unscored pretest questions (pretest items dispersed throughout the exam and not identifiable)4 hours (break and second security check included in the four-hour window)

Registered Environmental Health Specialist/Registered Sanitarian (REHS/RS) ExaminationREHS/RS Exam · NEHA

225 multiple-choice questions in two parts (Part 1: 113 questions; Part 2: 112); 200 scored and 25 unscored pilot questions3 hours 40 minutes total — 1 hour 50 minutes per part, with a 10-minute break between parts

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