There are only four exceptions listed in Section 234.02(a), Florida Statutes, that allow students to be transported in non-approved school buses: (a) When the student is physically handicapped or isolated; (b) When transportation is part of a comprehensive contract for a specialized educational program; (c) When transportation is provided through a public transit system; or (d) When the transportation of students is necessary or practical in a motor vehicle owned or operated by a school board other than a school bus, such transportation must be provided in designated seating positions in a passenger car not to exceed 8 students or in a multipurpose passenger vehicle designed to transport 10 or fewer persons which meets all applicable federal motor vehicle safety standards.