Section 6. A town may request and receive an extension of time for submission of its report and returns from the commissioner for cause.

Any town which has not received an extension of time and whose report and returns are not received by the commissioner on or before September thirtieth shall be subject to such penalties as may be established by the board of education under regulations adopted by it under chapter thirty A of the General Laws. Such penalties may include, but not be limited to, forfeiture by such town of part or all of the amount to be distributed to it by the state treasurer under chapter seventy.