St. Mark’s School presently has 16 full size classrooms. Ultimately, if the school is to continue with the goals of its strategic plan, two new classrooms will need to be added in the near future. When new classrooms were constructed during the 2007/2008 school year, consideration was given to future electrical needs with the installation of a new electrical panel as well as placement of new water lines to accommodate future expansion. The electrical service allows for the possibility of one day adding air conditioning to classrooms in the main building. Presently, all of the new middle school is air conditioned (six classrooms). In the main building, one classroom, two computer labs, library, office, gym, and auditorium have air conditioning.
In addition to the classrooms, the school also has the following: one full size computer lab with 34 computers, one small lab with 16 computers, two locker rooms, a gymnasium that also serves as the cafeteria, a stage that is used as a music classroom, kitchen, library, instructional and office area for the reading specialist, staff room, administration offices, and an auditorium which seats over 550. Two portable classrooms on the property are used for various projects including health class and art, as well as a range of parish activities. The schools computer infrastructure allows for over 150 computers to be used on site. In addition to the two computer labs, each classroom has a minimum of 5 computers. The square footage of the main school building is 33,000, while the new middle school is 8,000. Additionally, the portables have 1,800 square feet. Total square footage of the entire school is 42,800 sq. ft.
The school is distinctive from other Catholic schools in the city by the large outdoor playground. There are two blacktop areas with about 16,000 square feet, a picnic area, playground equipment, and a grass field which totals about 53,400 square feet.