Online Programs For
Contractors in California

Contractors Exam Prep & More For General A, B, B-2 and All Other Trades

what we teach


Contractor State Licensing Courses

For 40+ years, our unique system has helped more than 135,000 students get their state license (General A, B, B-2 and other trades).

Practice Exams

Our continually updated list of practice exams has helped our students to get better prepared with their exams.

Contractors Career

Our specialized seminars help contractor’s businesses grow by staying relevant.



As the largest school in  California devoted exclusively to construction professionals, CSLS has earned a reputation for service and quality instruction that is unmatched anywhere. For more than 40 years, we have helped contractors and other professionals to become licensed, learn about their trade and run more efficient, profitable businesses. Although we feel confident in saying that we are the best construction industry school in the state – with more than two dozen locations – it’s the thousands of people whose dreams we have helped turn into reality that we are most proud of.

Our school isn’t just seven times larger than the next closest competitor, but it’s one of the few around that was formed by experienced builders and instructors, not legal or insurance professionals. So, when you want to learn the construction industry the right way, put yourself on the path to success, higher earnings and choose CSLS.