The most recent class of law school graduates performed 4.38 million hours of pro bono work as students, according to new data from the Association of American Law Schools.

That free legal work is valued at more $111 million, using the hourly rate of $25.43 established by nonprofit organization Independent Sector. It’s the highest number of pro bono hours recorded by AALS in the four years since the group began tracking the amount of free legal services law students perform.