Mass. Gen. Laws ch. 43 § 81
The government of the city and the general management and control of all its affairs shall, except as otherwise provided in this chapter, be vested in a city council, which shall exercise its powers in the manner hereinafter set forth, but subject to sections one to forty-five, inclusive, in so far as not inconsistent; except that the city manager shall have the authority hereinafter specified, and that the general management and conduct of the public schools of the city and of the property pertaining thereto shall be vested in the school committee, and that the city clerk, the city auditor, any official of the city appointed by the governor and any trustees or other officers whose election by the voters of the city is required by the reason of the fact that the city has accepted any gift, devise or bequest shall have the powers and duties which may be conferred and imposed upon them by law.
Mass. Gen. Laws ch. 43, § 81