1 definition by i.have.the.answers

a prep school for girls in nor. cal, where all the girls are usually very confident and cool, and really focus on their work, but can also have fun. They have a reputation for having awesome dances and they always wear these mini light blue flowy skirts which many guys say are really hot when they are rolled up high.
Theo: Wow, that castilleja girl is hottt
Jake: are you going to their dance next week?
Theo: Wouldn't miss it for the world!!
by i.have.the.answers July 30, 2009
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