You can use the public school or attend a private school, it is a choice and you are free to pay for it.  However, using taxpayer money to support religious institutions is not a functional, fair, and proper model for a secular society and the Blaine amendment is correct no matter what historical context you believe for its implementation. Religious institutions must rely on people who support the institution and not the govt who taxes the public. I will pay for my family and our religion of our choice, and we refuse to have the govt tax me to support one not of my choosing or one I oppose, in direct or indirect payment of my taxpayer contributed money. 

When a religious institution can gain a revenue stream from public tax dollars, it becomes an incestuous violation of our first amendment.