Skinner Tower, constructed in 2007 and designed by Scott Simons Architects, is located just west of Plimpton Hall and connects to that building. Skinner Tower was named after Carlton Skinner, the first civilian governor of Guam and one of Tilton's most distinguished alumni. It is a , wireless building that is four stories high. The atrium of the tower is used as a common space for students during free periods, as an art gallery, and sometimes as a dance floor for school socials. Skinner Tower is home to the Davis Lecture Hall, a 100-seat, SAT-certified lecture hall which is used as a classroom and venue for speakers and presentations. The first floor comprises a biology laboratory (complete with two-story greenhouse), a chemistry laboratory, and the 9th grade FIRST Program seminar room with a connecting outdoor classroom space. The second floor houses the physics laboratory, math classrooms, and integrated math/science faculty work spaces, which enhance cross-discipline collaboration, as well as the Head of School and Assistant Head of School offices. The third floor has the world languages classrooms and language laboratory and resource rooms, as well as the Center for Academic Achievement, which encompasses 10 one-on-one tutorial rooms, computer lab and common space.