OAPCS | Contact Us | Ohio Department of Education Transformative Conversations about school performance and education across Ohio. Closing the Achievement Gap Ohio Growth Models School Performance Index Trend Data School Achievement and Economic Disadvantagement: These graphs show where charter and traditional school performance fall in four quadrants. School Achievement and Value Added: These graphs show where charter and traditional schools fall when looking at percent proficient on state assessments and value added scores. School Performance Index Trend Data: These graphs show multiple years of Performance Index data for a school, in comparison to their region and to the state average. All data is from the Ohio Department of Education (ODE) website.