San Marin High School has completed several construction projects, which have greatly improved campus facilities. The school now has a new multipurpose room that features not only dining areas and a kitchen but also a servery and a basketball court. In addition, a new performing arts center and a STEM building have been added. Upgrades have also been made to campus internet capabilities, which now include both wired and wireless internet and charging capabilities. The school’s sports facilities have also been enhanced with a new turf and track, as well as new stadium lighting, a public address system, a press box, and new baseball and softball fields.