"If Jay Z really wanted to help, why not partner with public schools and create community schools with wraparound services?"
Exactly.
He's not helping. He doesn't know anything about education policy. He's just rich.
Vouchers are a perfect example of insideousness named as something that sounds like a good idea.
Vouchers are never good.
They take money away from schools that actually need the funds and go to schools that are popular - and often, popular among whites that have moved into Black neighborhoods.