High school students will be able to take an at-home online SAT if the coronavirus outbreak keeps schools closed into the fall, the College Board announced Wednesday, a radical shift that is raising concerns about equity and the security of the standardized college admissions test.

If administered at home, the College Board intends to keep the format of the exam “as close to the SAT students have been preparing for,” with some possible changes to ensure security of the exam, officials said. The organization said it would share more details about the at-home test should it look like that version will be required.

The announcement comes as colleges across the country — including the University of California — are making the SAT and ACT tests optional as an admissions requirement for students entering college in fall 2021. At the same time, the test is coming under increasing scrutiny as a barometer of college success, especially for underserved minority students.