N.Y. Education Law § 1501-B
1. The board of education of any school district is hereby authorized and empowered to rent or lease for such consideration as may be determined by such board, a motor vehicle or vehicles owned by the respective school district during any time when such vehicle or vehicles are not needed for the transportation of such children, which are otherwise used for the transportation of the school children of such district to:
4. In any case where such motor vehicle is leased pursuant to subdivision one of this section or where any services are contracted for pursuant to subdivision two or three of this section, the consideration to be received for such lease or contract shall not be less than the full amount of the costs and expenses resulting from such lease or contract.