Wyo. Const. art. 7, § 2

The following are declared to be perpetual funds for school purposes, of which the annual income only can be appropriated, to wit: Such per centum as has been or may hereafter be granted by congress on the sale of lands in this state; all moneys arising from the sale or lease of sections number sixteen and thirty-six in each township in the state, and the lands selected or that may be selected in lieu thereof; the proceeds of all lands that have been or may hereafter be granted to this state, where by the terms and conditions of the grant, the same are not to be otherwise appropriated; the net proceeds of lands and other property and effects that may come to the state by escheat or forfeiture, or from unclaimed dividends or distributive shares of the estates of deceased persons; all moneys, stocks, bonds, lands and other property now belonging to the common school funds. Provided, that the rents for the ordinary use of said lands shall be applied to the support of public schools and, when authorized by general law, not to exceed thirty-three and one-third (33 1/3) per centum of oil, gas, coal, or other mineral royalties arising from the lease of any said school lands may be so applied.