LC: The tax shortfall to cover the school budget is much much greater than the cost of courtesy busing for private school students. Most of any tax increase will cover public schooling, not courtesy busing.
It would, from an economic standpoint of the private school voter base, be more cost effective for the voters to vote down all future school tax increases, even if that means forfeiting courtesy busing, and simply have the parents privately pay for the busing of the students too close to school to qualify for mandatory busing. This will cost them less than the needed tax increase to cover the annual school budget shortfalls. Of course exercising this option will mean the public schools will fail since they will not have enough funding to cover their school budget, unless the State fixes the formula to provide State school funding.