Math Day at the Beach 2009
| 1 | Zhang, Zhifan "Ivan" | University HS (Irvine) |
| 2 | Zhi, Dillon | Woodbridge HS (Irvine) |
| 3 | Yin, Kevin | San Marino HS |
| 4 | Tian, Yuxi | Irvine HS |
| 5 | Xing, George | University HS (Irvine) |
| 6 | Song, Ji Unn | Independents 2 |
| 7T | Ke, David | Arcadia HS |
| 7T | Ramirez, Alex | Troy HS (Fullerton) |
| 7T | Whang, Jay | Troy HS (Fullerton) |
| 10 | Yang, Dai | University HS (Irvine) |
| Rank | School |
| Division A | |
| 1 | University HS (Irvine) (overall champion school) |
| 2 | Troy HS (Fullerton) |
| 3 | Arcadia HS |
| 4 | Woodbridge HS (Irvine) |
| 5 | San Marino HS |
| Division B | |
| 1 | Irvine HS |
| 2 | Diamond Bar HS |
| 3 | West HS (Torrance) |
| 4 | Dos Pueblos HS (Goleta) |
| 5 | Loyola HS (Los Angeles) |
The following schools will be in Division A in 2010:
| University HS (Irvine) |
| Troy HS (Fullerton) |
| Arcadia HS |
| Woodbridge HS (Irvine) |
| San Marino HS |
| North Hollywood HS |
| Palos Verdes Peninsula HS |
| Irvine HS |
| Diamond Bar HS |
| Northwood HS (Irvine) |
| Palos Verdes HS |
