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

December Office Hours*

Week of December 1
Monday: CLOSED
Tuesday: 9:00 a.m. - 4:00 p.m.
Wednesday: 9:00 a.m. - 2:00 p.m.
Thursday: 9:00 a.m. - 4:00 p.m.
Fri-Sun: CLOSED

Week of December 8
Monday: CLOSED
Tuesday: 9:00 a.m. - 12:00 p.m.
Wednesday: Winter hiatus begins

*TPI will be on winter hiatus from December 10, 2025 to February 23, 2026.