Arizona is sending taxpayer money to religious schools — and billionaires see it as a model for the US

Near the edge of the Phoenix metro’s urban sprawl, surrounded by a wide expanse of saguaro-studded scrubland, Dream City Christian School is in the midst of a major expansion.

The private school, which is affiliated with a local megachurch where former President Donald Trump held a campaign rally this month, recently broke ground on a new wing that will feature modern, airy classrooms and a pickleball court. It’s a sign of growth at a school that has partnered with a Trump-aligned advocacy group, and advertises to parents by vowing to fight “liberal ideology” such as “evolutionism” and “gender...