Guidelines state that classrooms should be large enough to give each student a minimum of 20 square feet of space, exclusive of wall cabinets, heat sources and other permanent architectural features. The only exceptions to these rules are for classrooms containing students with physical disabilities and kindergarten children, both which require a minimum of 35 square feet.
Non-standard and sub-divided rooms with less than the required number of students on their register may be eligible for an exemption to these regulations, but each circumstance must be officially approved by the DOE.