A great, but exhaustive, listing of best practices for retention can be found at this web site.
We have additional tools coming this fall for students and faculty that should provide additional routes for students to be successful academically, but they are just tools. As you will read in the listing of best practices, the greatest impact on student success and retention is the quality of the experiences students find on campus. Both in the classroom and outside of the classroom..
You may find the listing interesting. Especially page 4.