California Code, Education Code - EDC § 17486

(a) Either the whole or a portion of the schoolsite consists of land which is used for school playground, playing field, or other outdoor recreational purposes and open-space land particularly suited for recreational purposes.

(b) The land described in subdivision (a) has been used for one or more of the purposes specified therein for at least eight years immediately preceding the date of the governing board's determination to sell or lease the schoolsite.

(c) No other available publicly owned land in the vicinity of the schoolsite is adequate to meet the existing and foreseeable needs of the community for playground, playing field, or other outdoor recreational and open-space purposes, as determined by the governing body of the public agency which proposes to purchase or lease land from the school district, pursuant to Section 17492.