WASHINGTON — Aiming to reduce test-taking in America’s classrooms, the Obama administration released final rules Wednesday to help states and school districts take a new approach to the standardized tests students must take each year.

It’s part of the new bipartisan education law, signed by President Barack Obama a year ago, that returned substantial control over education policy back to the states, including the role test scores play in evaluating schools, teachers and students.

“Our final regulations strike a balance by offering states flexibility to eliminate redundant testing and promote innovative assessments, while ensuring assessments continue to contribute to a well-rounded picture of how students and schools are doing,” said Education Secretary John B. King Jr. “Smarter assessments can make us all smarter.”

The idea is to focus more time on classroom learning and less on teaching-to-the test — something critics complained the administration had encouraged with grants and waivers that placed too much of a focus on standardized testing.

The education law passed last December still requires districts and schools to test students annually in reading and math in grades three to eight, and once in high school. It gives states greater flexibility in deciding what tests they could use to see how students are performing. For example, districts could use a nationally recognized high school assessment, the SAT or ACT, instead of the state tests in high school.

The rules released Wednesday clarify that replacement tests must provide the same benefits to all students, including English learners and students with disabilities. That means the tests would have to allow those students special accommodations, such as extra time.

The regulations spell out other ways to help unnecessary testing. Eighth-grade students taking advanced math, such as Algebra 1, would take just one test — the Algebra 1 exam and not the regular eighth grade math assessment.

A pilot test that will allow up to seven states to design their own assessments is also part of the new law, and the final regulations set forth a framework for how states may implement those new tests. Districts could use the innovative assessment in all grades and subjects or a subset of them.

The pilot states would eventually administer the tests statewide but could experiment in a smaller number of districts at first. States would have five years to put the new testing system in place but could request a two year extension. The pilot states have not yet been selected. That will fall to the incoming Trump administration.

The new rules do not set a cap on testing in the nation’s public schools. Students spend about 20 to 25 hours a school year taking standardized tests, according to a study of the nation’s 66 largest school districts by the Council of the Great City Schools. In all, between pre-K and 12th grade, students take about 112 standardized exams — about 2.3 percent of classroom time for the average 8th grader. Obama has encouraged states to cap testing at 2 percent of classroom time.