This story is updated as of 12:10 p.m. March 20.

According to a release published by the College Board, which administers Advanced Placement exams and the SAT tests, the testing will focus on what students were able to learn by early March and will be administered online.

“Some students may want to take the exam sooner rather than later, while the content is still fresh,” according to the College Board. “Other students may want more time to practice. For each AP subject, there will be two different testing dates.”

The testing will also be abbreviated to 45-minutes of free-response questions, according to the College Board. Similar forms of Advanced Placement tests have been used in emergency-zones in the past. 

The College Board will announce more details by April 3.