COVID-19/CSLS Status
Physical schools: OPEN • Online school: OPEN • Shipping: ON-SCHEDULE • Click HERE for more info.

Locations & Directions


Our Ontario location which was located on Euclid Avenue for nearly five years has closed due to the consolidation of some of our Southern California locations.  We continue to provide our comprehensive In-School License Exam Preparation programs, Contractor Career Development Courses and Contractor business services to the Ontario area through our Covina and Riverside locations.

CSLS also provides a variety of convenient Self Study License Exam Preparation programs to meet your educational needs,  including our Exam Prep Home Study program, our Interactive Online Law & Business Program, Self-Guided Online Exam Prep Programs, Online Exam Study Material and Practice Exams.  

We are confident that whether you choose an In-School or Self Study program, we can provide you with the best License Exam Preparation to help you get your Contractor’s License.

To Request more on available Contractors Licensing Classes, Contractor Career Development or Contractor Business Services - Click Here OR Call: (800) 303-4691.