Lemons to lemonade

In Fall 2014 I started several CATS and collected 3 data sets for the analyses. Upon return from break I found that 2:3 datasets were erased irretrievably from the server, making analysis impossible. I do however, still have one data set looking at a variety of success and satisfaction factors in a 16- week PSY 101. I want to use the data painstakingly collected, so I included the same assessment instrument in my 16- week 101 this semester with the intention to compare satisfaction and success between Fall & Spring students. If there are significant differences between Fall and Spring participants, I will run the same assessment next year to verify the reliability of results. There are several questions on the assessment that could indicate specifically where differences lie, and those areas would be subject to modification for the semester in which students either perform more poorly or are less satisfied, if in fact that is what the data show.