Sec. 4. The board of trustees of a state educational institution may, as the board of trustees finds a need exists, establish and conduct at the main campus of the state educational institution within the appropriate school or college of the state educational institution, laboratory schools for:
(1) developing, testing, and evaluating new methods of instruction and materials;
(2) comparing new methods with conventional methods in use; and
(3) training teachers in new methods of instruction and materials, as is found acceptable.