Expanding school vouchers is a central component of the Trump Administration's education agenda. However, the extent to which the Administration can fully realize this policy goal may hinge, in part, on the level of public support or opposition for the voucher method of reform and on the particular components of any proposed voucher system. In this policy brief, we report on a randomized survey experiment we conducted to identify how two key dimensions of school voucher systems--source of funding and scope of coverage--affect public opinion across various sectors of the American public.