Justice Reed would have affirmed. He agreed that the Establishment Clause applies to the States, but rejected the conclusion that Champaign’s voluntary program amounted to an establishment of religion. In his view, the teachers, curriculum, and religious instruction were supplied and controlled by private religious groups, not by the school board.
Reed understood forbidden governmental “aid” to mean direct and purposeful support of a church or of ecclesiastical activity. He regarded the school’s incidental assistance—allowing use of rooms, excusing students with parental consent, and maintaining routine enrollment and attendance records—as insufficient to establish religion, especially because the religious groups paid their own teachers and materials.
He argued that the majority failed to identify precisely which feature of the arrangement was unconstitutional: use of school buildings, release during school hours, distribution of request cards, attendance records, or some combination. Reed believed that this lack of a clear rule endangered many released-time programs and other longstanding practices involving government and religion.
Historical practice, in Reed’s view, supported Illinois. He pointed to government chaplains, religious observances at military academies, public assistance available to children attending religious schools, and longstanding released-time arrangements in many states. These practices showed, he argued, that the Constitution does not prohibit every cooperative or accommodating relationship between government and religion.
Reed also distinguished coercive religious exercises from this elective program. Parents had to request enrollment, instruction did not include worship services, prayer, or hymns, and the arrangement did not compel any child to profess a belief. The Establishment Clause, he concluded, does not require an absolute ban on every friendly gesture or incidental cooperation between church and state.