Is it unconstitutional to allow parochial school children to ride on public school buses?

Bowker v. Baker (1946) 73 Cal.App.2d 653, 167 P.2d 256 declined to hold unconstitutional the practice of permitting parochial school children to ride on public school buses. The court acknowledged that "[f]ree transportation of pupils induces attendance at the school" and that "[i]t is also true that the transportation of pupils to and from public schools is one of the legitimate methods adopted to help promote education and safeguard children." (Id., at pp. 660, 663, 167 P.2d 256.)