The Milwaukee voucher program, as implemented in 1990, allowed only nonsectarian private schools to participate in the program. However, following a Wisconsin Supreme Court ruling, the program was expanded to include religious private schools in 1998. This second phase of the voucher program led...

The literature suggests that competition among schools might increase quality. However, not much empirical evidence is present as only a few countries allow competition at a large scale. One exception is the Netherlands. Free parental choice is the leading principle of the Dutch education system...