Maplewood High School is situated on nearly 47 (46.98) acres of gently rolling pristine acres and the close surroundings appear more rural than urban. Presently the two-story building with a lower floor (basement) underneath one wing has 566,280 square feet of floor area. Additions were made to the original building in 1959, 1960, 1970, and 1988. The second building, which is connected by a breezeway and referred to as the vocational addition, was built in 1978. This addition includes 55,505 square feet, and it was at this time that Maplewood High School became Maplewood Comprehensive High School. During the summer of 2006, extensive carpentry, masonry, and plumbing work has been done for the building to be in compliance with the American Disabilities Act.

Other characteristics of the building are a concrete foundation, flat roof, gas-fired heating, and fluorescent lighting. The walls, both exterior and interior, are primarily brick, concrete blocks, and some tiles. The total student capacity is 1500+, and the buildings have 33 restrooms, 25 water fountains, 54 classrooms, two gymnasia, cafeteria seating for 250, and auditorium seating for 450. The classrooms used for laboratories and/or work areas are designed to promote student hands-on activities and creative learning experiences. An inviting entrance, comfortable halls, a well-equipped clinic, adequate office space, a user-friendly spacious library housing an average of about 12 books per student, computer centers with 1 computer for every 4 students, and adequate parking facilities are among other amenities. During the spring and summer of 2004, a 3-COM NBX voice over Internet Protocol [telephone] system and Chancery, a student information system [computer] were installed. The main objectives are to improve and enhance school-wide communication, and to provide efficient parental access to pertinent information and student progress. Painting, some new carpeting, and cosmetic work have been done which greatly enhance the appearance of the facility. A new wall has been constructed between two classrooms that teachers believe to be most beneficial.