Colorado will receive a federal grant totaling $653,573 to cover all or part of fees charged to low-income students taking Advanced Placement tests, the U.S. Department of Education announced Wednesday. The state’s share is among more than $21.5 million in grants to 43 states. They’re expected to be enough to pay up to $38 per AP exam for as many as three exams per student, based on the anticipated number of test-takers and other factors. “These funds will help eliminate financial roadblocks for more low-income students and allow them to fully benefit from the AP program,” said Secretary of Education Arne Duncan.