Welcome to the California Association of School Transportation Officials "CASTO" webpage. Here you will be able to sign up, renew, or update your membership, register for upcoming events and receive important information in regards to California's School Pupil Transportation Industry.
We now accept payments online!
CASTO's official address has changed! The new address is:
PO Box 348120
Sacramento, CA 95834
Please send any future correspondence to the new address above. Please help get the word out and forward this to your accounting and payroll departments to ensure payroll deductions are routes properly. The previous address will continue to be monitored for the next thirty days.