Cumulative classroom net square foot requirements, excluding in-classroom storage space and any in-classroom toilet rooms, shall be at least: For prekindergarten, 50 net square feet per student; For kindergarten, 50 net square feet per student; For grades 1—8, 32 net square feet per student; and For grades 9—12, 25 net square feet per student; At least 2 net square feet per student shall be available for dedicated, in-classroom storage and may be provided vertically to avoid the need for additional floor area. Sufficient number of classrooms shall be provided to meet State and local board mandated student-to-staff ratio requirements Administrative History.