State law encourages and/or incentivizes the community use of school buildings and property for recreation or other purposes.
New Jersey Statutes 18A:20-22 School districts joining with municipality or county in equipment and operation.
The board of education of any district may join with the governing body of any municipality, or the board of chosen freeholders of the county in which the district is located, in acquiring, improving, equipping, operating and maintaining playgrounds, playfields, gymnasiums, public baths, swimming pools, and indoor recreation centers, and may appropriate money therefor and may pay over to the said body or board such money as may be so appropriated to be disbursed for any of such joint purposes.
New Jersey Statutes 18A:20-34 Schoolhouse rooms; permitted usage.
The board of education of any district may, pursuant to rules adopted by it, permit the use of any schoolhouse and rooms therein, and the grounds and other property of the district, when not in use for school purposes, for any of the following purposes: a. The assembly of persons for the purpose of giving and receiving instruction in any branch of education, learning, or the arts, including the science of agriculture, horticulture, and floriculture; b. Public library purposes or stations of public libraries; c. The holding of such social, civic, and recreational meetings and entertainments and such other purposes as may be approved by the board; d. Such meetings, entertainments, and occasions where admission fees are charged as may be approved by the board; e. Polling places, holding elections, registration of voters, and holding political meetings; f. Child care services provided by the board of education, or a board approved sponsor, or a child care program licensed pursuant to P.L. 1983, c. 492 (C. 30:5B-1 et seq.), before or after regular school hours, for any school aged child who attends school within the school district.
New Jersey Statutes 18A:4-12 Use of lands controlled by state board for recreation purposes.
The state board may permit a municipality in which lands under the control and management of the state board are situate, to use such lands, when not required for school or state purposes, as playgrounds or recreation centers for the children of the municipality, but the municipality shall be liable for any damage done to property so used.