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Rhode Island will get $45,248 in federal funding to help low-income students take Advanced Placement exams.

The U.S. Department of Education announced a round of grants for more than 30 states on Wednesday. Connecticut,  Massachusetts and New Hampshire were also among the states receiving funding.

The grant amounts were based on state estimates of how many AP tests would be taken by low-income students. Federal officials said the program is intended to pay for all but $12 of the cost of each test, although states can require students to pay more.

More Rhode Island students are taking Advanced Placement tests, but they are not passing at the same rates as their peers around the country.

The College Board has just released its annual report on AP testing. The study shows that nearly 2,500 members of Rhode Island’s class of 2013 took an AP exam, up from roughly 1,000 in 2003. The number represents more than a quarter of all high school graduates.

But as the number of test takers has increased, the percentage of students passing the exams has fallen.