Southern Illinois University trustees have approved a 2 percent tuition increase for students who enroll at the Carbondale campus for the 2018-2019 school year.

The board voted unanimously Thursday to raise tuition to an annual rate of $9,637.50 for undergraduates and $11,268 for graduates. The new rate will affect only new enrollees.

A proposed increase of 8.5 percent for graduate and School of Law students was reduced to 2 percent. Chancellor Carlo Montemagno said a bigger increase wasn’t worth the adverse impact it would have on the ability of graduate students to attend the university.