Tex. Educ. Code § 61.221

In order to provide the maximum possible utilization of existing educational resources and facilities within this state, both public and private, the coordinating board is authorized to provide tuition equalization grants to Texas residents enrolled in any approved private Texas college or university, based on student financial need, but not to exceed a grant amount of more than that specified in the appropriation by the legislature or as provided by Section 61.227.