"If we allow public funds to be used to support our relatively benign, morally grounded schools, we will have to allow those public funds to be used for any type of private school"

This quote by Jonathan Kozol is describing making use of public funds to support private schools. He is recommending that if public funds are used to support morally grounded schools, then they should likewise be utilized to support any kind of independent school. This means that public funds must not be used to victimize certain kinds of independent schools, despite their moral values. Kozol is promoting for a fair and equivalent usage of public funds, so that all independent schools can benefit from the same resources. He thinks that this will create a more equitable education system, where all trainees have access to the exact same quality of education. By allowing public funds to be used for any type of private school, Kozol is recommending that all trainees must have the same chances to get a quality education, no matter their background or beliefs.