Castille Elementary School 33122 Valle Rd, San Juan Capistrano, CA92675 Castille Elementary is known for its strong academics, with its 2010 Academics Performance Index reaching 902. In 2006,…More Castille won a California Distinguished School award from the California Department of Education. Castille has a diverse population with 16 different languages spoken among the students. The school's motto this year is, "It's Cool to be Kind." The school mascot is the coyote.