This document discusses several models, which if implemented, would remove out-of-state barriers to educational opportunity. Such opportunity might be expanded by initiating cooperative studies and sharing specialized teaching resources. The appropriateness of the models depends on individual state and district laws regulating tuition, waivers, out-of-state student quotas, and constitutional limitations on interlocal and interstate agreements. Included in this document are samples of legislation enabling educational institutions within a state system to enter into bilateral or multilateral exchange agreements. The models of exchange are: (1) a simple student exchange on a reciprocal basis; (2) an exchange program for students in specified curricula; (3) tuition reimbursement to students in specific curricula; (4) contractual payments sending state funds to the receiving state or institution; and (5) multilateral exchanges for students in regional curricula. (CA)