New data on Georgia's schools suggests the state's elementary and middle schools have improved during the last two years. But high schools haven't made the same gains. Monday's report from the Department of Education is the second year of Georgia's homegrown ratings system for school performance, known as the College and Career Ready Performance Index, or CCRPI. The index takes into account state test scores, attendance and graduation rates, achievement gaps between different groups of students and progress schools make from year to year, among a long list of factors.