Contractor School Online® (CSO) is the premier educational provider, offering all 50 States quality training to prepare you for your State Contractor License Exam.

We are a national company and carry over 3,000 construction book titles, updated codes, CD'S, audio tapes, construction calculators, and more.

We have helped corporations both large and small, as well as individuals, to obtain their contractors or specialty license in the states that require a state license.

CSO can assist you with practice exams, applications and home study courses in all states that require a state contractor's license.

The materials we carry are what that state suggest you read, before taking the state test.