The growth effect size, measured in standard deviations, is the average change in performance of students attending a network charter school compared to a traditional school. (21cchartergary.org)
Changes in performance from 2009 - 10 to 2010 - 11. (educationnext.org)
We'll be logging lots of track miles with this car and measuring changes in performance with each upgrade. (automobilemag.com)