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

June Office Hours

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

Week of June 9
Monday: 8:00 a.m. - 4:00 p.m.
Tuesday: 8:00 a.m. - 4:00 p.m.
Wednesday: Summer Hiatus*

*TPI will be on summer hiatus 6/11/25 - 8/25/25