wichita.edu
…participate in SI earn about half a letter grade better than those who do not. Attendance at sessions is voluntary and completely free. For the student, it is a chance to get together with other students in the class to compare notes, discuss important concepts, develop strategies for studying, and test yourself before the professor does. The program’s…
https://www.wichita.edu/services/student_support/StudentResources/academic.php