Any school district may acquire real property upon which to build a school in a town not within such school district, provided such town approves such acquisition by referendum. Those eligible to vote at town meetings under § 7-6 shall be eligible to vote on such question. Any school district proposing to acquire such property shall so notify the town clerk of the town in which such property is located, and such town shall hold a referendum within sixty days after receipt of such notice. The school district giving such notice shall bear the cost of such referendum.