The San Marcos Unified School District is divided into five Zones - A, B, C, D, and E Zones. A Trustee represents each Zone from the respective Zone. Each seat has a 4-year term. Current presentations by Trustee Area is as follows:
Area A: Dr. Carlos Ulloa, Board President
Area B: Sarah Ahmad, Board Vice President
Area C: Andrés Martín , Clerk of the Board
Area D: Jaime Chamberlin, Board Member
Area E: Stacy Carlson, Board Member