In Penn Hills Charter School (No. CAB 2001-7), State Charter School Appeal Board (CAB) held that the charter school failed to demonstrate sustainable support, as required by Section 1717-A(e)(2)(i) of the CSL, because there was no evidence from parents that they intended to enroll their children in the proposed charter school, or from students who wished to attend the proposed charter school, or from teachers who supported the grant of the charter. The evidence consisted of eleven letters of support and 197 signatures of residents of Penn Hills or a neighboring municipality who supported the establishment of the charter school; however, those signatures were undated and, in many cases, did not indicate whether the signatory had children.