California State Student Association
The California State Student Association (CSSA), also known as the Cal State Student Association, is an "unincorporated income tax-exempt association". CSSA is exempt from taxation under Section 501(c)(3) of the United States Internal Revenue Code and it is exempt from state franchise or income tax under California Revenue and Taxation Code Section 23701d.
Source: Wikipedia — California State Student Association (CC BY-SA 4.0)