Section 37A. School committees of cities and towns and regional district school committees may accept grants or gifts for educational purposes from federal, state, county and municipal governments or agencies thereof, charitable foundations and private corporations and disburse the same for such purposes. Any amounts so received by a school committee of a city or town shall be deposited with the treasurer of such city or town and held as a separate account, and expended by said school committee without further appropriation, notwithstanding the provisions of section fifty-three of chapter forty-four. Any amounts so received by a regional district school committee shall be deposited with the treasurer of such regional school district and held as a separate account and expended by said committee.