Daily Online Testing in Large Classes: Boosting College Performance while Reducing Achievement Gaps
Figure 1
Grades in Fall Psychology and Non-Psychology Classes and Spring Classes by Year and SES.
The sample size for these analyses is 1732. Although the 2011 TOWER class was lower (mean GPA = 2.43) than 2008 comparison group (GPA = 2.59), actual performance using a benchmarking procedure revealed that the TOWER students performed 0.59 letter-grades above the comparison students. This adjustment is included in figure.