Georgia’s largest school system has won the nation’s top prize in public education, which will provide $1 million in college scholarships for needy students in the district, the Associated Press reports. Gwinnett County Public Schools snagged the Broad Prize for Urban Education, an award the Eli and Edythe Broad Foundation gives annually to urban districts that show the most gains in student performance and closing minority achievement gaps. It’s the second year in a row the 150,000-student district was nominated for the prize. The district is 28 percent black and 25 percent Hispanic, with about half of students qualifying for free or reduced lunch. But last year in reading and math, Gwinnett County schools outperformed all other Georgia districts serving students with similar family incomes…