About CLEP Exam Prep
An independent practice platform for the Certified Lighting Efficiency Professional (CLEP) exam - real questions across every exam domain, each with a plain-language explanation.
What's on the CLEP exam
The Certified Lighting Efficiency Professional (CLEP) exam is organized into 11 knowledge domains. It has 120 questions and is completed in 4 hours. Here is what it covers:
- Language of Light and Lighting Efficiency (8-12%)
- Lighting Quantity and Quality Fundamentals (8-12%)
- Color, Visibility, and Health (8-12%)
- Traditional Light Source Lamps and Ballasts and their Operating Characteristics (4-6%)
- LED Technology and its Operating Characteristics (8-12%)
- Lighting Maintenance and Environmental Safety (4-6%)
- Lighting Controls (8-12%)
- Lighting Audits (4-6%)
- Lighting Photometrics, Reports, and IES Files (8-12%)
- Lighting Calculations (12-18%)
- Financial Analysis Metrics and Calculations (8-12%)
Every practice question on this site is organized across these 11 domains, so your study tracks the real exam structure instead of guesswork. As you answer, the per-domain analytics surface the areas still costing you points, so your review goes where it moves your score.
What we believe good exam prep looks like
Realistic practice beats passive reading. Every question is written to mirror the style and difficulty of the real exam, with a clear explanation of why the right answer is right and the others aren't.
Your weak spots should find you. Domain analytics, mistake review, and re-drilling are built in, so study time goes where it moves your score.
Pricing should be simple. One payment for a fixed access window matched to your exam date. No subscription, no auto-renewal, and 10 free questions to try before you spend anything.
Get in touch
Questions, feedback, or something not working? Email support@boardmentor.study - candidate messages are read and answered.