This report summarizes analyses performed on IDEA student ratings of instruction collected in traditional (i.e., on-campus) and online courses from 2002 to 2008. Only classes utilizing online survey delivery and identified exclusively as either traditional (N = 5,272) or online (N = 13,416) were included. Classes were removed until all institutions contributed no more than approximately 5% of all classes analyzed. Instructors in each course rated the importance of each of 12 learning objectives and responded to questions about the course, using the IDEA "Faculty Information Form" (FIF). Students rated progress on the same 12 objectives, characteristics about themselves and the course, and overall measures of course and instructor effectiveness, using either the IDEA "Diagnostic Form" or "Short Form." Those responding to the Diagnostic Form also rated the instructor's use of various teaching methods. In general, the current findings indicate the IDEA Student Ratings System is useful for both online and traditional courses. The minor differences observed ultimately may guide instructors to improve student learning outcomes in online teaching environments. [This report was originally published in September 2019. It was updated December 21, 2010. For a summary report, see ED604031.]