We provided architecture; interior design; and mechanical, electrical, and plumbing engineering. The expansion includes 12 classrooms, a nurse's office, and a public clinic. Each classroom has its own bathroom, and each pair of rooms has a shared storage room which allows teachers to help monitor adjacent classrooms. Site orientation strategies and various design features improved the building's energy performance. Clerestory windows bring in natural light from the double-loaded corridors, and occupancy sensors reduce the use of artificial light. The height of the corridor allows heat to rise and helps maintain the conditioned space at the occupant level. An efficient air-to-air heating and cooling system was installed, and a unique air supply design for the classrooms includes a vent in each corner of the room that provides conditioned air closer to the students. We completed this project on budget and a month early.