Should every school charge the top rate, it would result in $31.7 million in tuition increases.

The North Dakota Board of Higher Education has approved a plan that sets guidelines for tuition rates at the state's 11 colleges.

The maximum increases vary between 2.13 and 6.63 percent, with a cap of 4.9 percent at the University of North Dakota and 4.23 percent at North Dakota State University.

Should every school charge the top rate, it would result in $31.7 million in tuition increases. Board members say it's a good formula because it allows the universities to set their own proportions.

Lawmakers approved a nearly 12 percent increase in state funding for higher education, but warned higher education officials about keeping tuition affordable.