Which is the best indication that Karim Abouelnaga’s Practice Makes Perfect program is a success?

O He has sold it to 31 schools.
O He went to college with help from a mentor.
O The average for participating students who go on to college is 89 percent.
O Inner city high schools often have low graduation rates.

The best indication that Karim Abouelnaga's Practice Makes Perfect program is a success is that the average for participating students who go on to college is 89 percent.