At present, charter schools are connected to public districts and under their control for content.  The voucher system may give them LESS money, and parents would have to pony up the rest.  Those who couldn't pay would be relegated to a cheaper, or public school. The voucher system is tailor-made for segregation- schools will be able to reject undesirable students, those special needs, Blacks, Latino, Korean, etc. students, and keep the school pure for 'our people'.  You're probably too young to remember the big increase in private schools in the wake of Brown vs. Board of Education.  Parents faced with integration looked for a way to keep their children from associating with 'undesirable Blacks' in the public schools.  And of course, they had the money to do it, and the private school industry boomed.