California Association of School Transportation Officials

State Conference online Registration is now closed.  Please register at the door 

Saturday Morning, March 24, 2018. - See you at the Conference.

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.

Upcoming events

  • No upcoming events

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.

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