The grants

The government offered grants to teachers who would commit to teaching at low-income and struggling schools.
Then, the grant officials would try to find the most petty excuses to cancel those grants.
Late paperwork, minor violations of the rules. That kind of thing.
They’d wait until the commitment was over before informing the teachers of their violations.
The teachers received letters demanding repayment of the grants.
Most teachers gave in, but Dan didn’t.
Dan spent three years in the worst gang-infested hellhole in Detroit.
So, he hunted down the grant officials, and taught them what he’d learned from his students.