§ 69p

The scope of such judicial review shall be limited to whether the decision of the board is in conformity with the constitution of the commonwealth and the constitution of the United States, was made in accordance with the procedures established under section sixty-nine H to section sixty-nine O and with the rules and regulations of the board with respect to such provisions, was supported by substantial evidence of record in the board's proceedings; and was arbitrary, capricious or an abuse of the board's discretion under the provisions of section sixty-nine H to section sixty-nine O.