During pledging, all sisters and pledges must attend study tables, I think it worked out to like 2 hrs a week. Other (non mandatory but suggested) study tables can be organized whenever needed. Often, we used it as a "hey, let's get together, study a bit, then go for pizza/half price appetizers/ice cream" thing. It was especially nice after Pledging and after Greek week to pull everyone back together. If a member is on/in danger of academic probation, the scholarship chair works with her to find her a tutor either within the sisterhood or outwith, and generally supports her.
I think at one point, our chapter GPA was something ridiculous like 3.5. My sisters are smart kitties
.