Contact Us 

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Teacher Preparation Institute (TPI) Center

Building 26A, Room 1610
Mt. San Antonio College
1100 N. Grand Ave.
Walnut, CA 91789 
Email: tpi@mtsac.edu
TPI Office: (909) 274-4190
Fax: (909) 468-4118

Spring Office Hours

Monday: CLOSED
Tuesday: 9:00 a.m. - 12:00 p.m. & 2:00 - 4:00 p.m.
Wednesday: CLOSED
Thursday: 9:00 a.m. - 12:00 p.m. & 2:00 - 4:00 p.m.
Friday-Sunday: CLOSED

NOTICE: Our office will be on summer hiatus beginning Friday, June 5.  We will return on Tuesday, September 1, 2026.  Enjoy the summer months.