Hampshire College in Amherst, Massachusetts, says it will not invest in private prison or security companies. The school’s board adopted the policy earlier this month.

The small liberal arts college will not put its endowment money in prison, security and surveillance companies. A group of student activists pushed for the change. Hampshire has previously barred college investments in fossil fuels and weapons manufacturers.

“It is very important for the college to act consistent in its values, not only in what we teach, but in what we do,” says college President Jonathan Lash.

The move was not exactly difficult for Hampshire, as the college did not hold any stocks in private prison companies. Earlier this year, Columbia University became the first college in the U.S. to divest from prisons