Carlmont High School 1400 Alameda de Las Pulgas, Belmont, CA94002 Carlmont High School is part of the Sequoia Union School District. It serves approximately 2,100 students in grades 9…More through 12. The name is a portmanteau of San Carlos and Belmont. The school follows the standard state curriculum, offering a variety of Advanced Placement classes and a strong arts program. It features modern facilities and technology, offering its own theater, biotechnology and science wing, Futures Center for college guidance, student union and library.