Schools are under increasing pressure to meet accountability requirements and show growth in student achievement across tested content areas. As a result, throughout the school year, student achievement data are analyzed to discover data trends that highlight both student gains and gaps in learning. Achievement gaps are identified and addressed with focused interventions designed to improve student understanding and ultimately achievement on a state middle school science assessment. This activity usually takes two 50-minute class periods to complete, and it was field-tested in the eighth grade. (Contains 7 figures.)