Notwithstanding any other provisions of this chapter, the taxes imposed herein do not apply to:
(1) Sales by elementary or secondary schools or nonprofit elementary or secondary school-sponsored clubs and organizations or any nonprofit, elementary, or secondary school-affiliated groups such as parent-teacher organizations and booster clubs, whose membership may be composed of individuals other than students, provided the net proceeds from the sales are used solely for the benefit of the elementary or secondary school or its students. Nontaxable sales shall include sales resulting from agreements or contracts entered into with resident or nonresident organizations to participate in fund-raising campaigns for a percentage of the gross receipts where students act as agents or salesmen for the organizations by selling or taking orders for the sale of tangible personal property, and no one shall be required to pay sales or use taxes on such sales;
(2) Sales made by nonprofit educational youth programs affiliated with a land grant university cooperative extension service, if the net proceeds from the sales are used solely for the benefit of the affiliated programs; or (3) (a) Sales of tangible personal property made by a federally chartered corporation at the corporation's annual national convention held in the Commonwealth.
(b) As used in this subsection, "federally chartered corporation" means a corporation federally chartered under Title 36 of the United States Code and whose stated purpose is to serve students and former students of vocational agriculture in middle and secondary schools to develop character, train for useful citizenship, and foster patriotism.
(c) The exemption provided in this subsection applies to sales made on and after October 1, 2014, but before December 31, 2021.