All money received pursuant to this article in the Inmate Welfare Fund of the Department of Corrections and Rehabilitation is hereby appropriated for educational, recreational, and other purposes described in Section 5006 at the various prison camps established under this article and shall be expended by the secretary upon warrants drawn upon the State Treasury by the Controller after approval of the claims by the Department of General Services. It is the intent of the Legislature that moneys in this fund only be expended on services other than those that the department is required to provide to inmates.