From the website
"Northeastern University will allow prospective students for the 2021-22 academic year to apply with or without standardized test results, a move prompted largely by the widespread cancelation of standardized test-taking opportunities this spring and uncertainty about future test dates.
The university’s “test-optional” policy applies to undergraduate and graduate students applying for the 2021-22 academic year. Students applying to programs that traditionally require the SAT, ACT, GRE, GMAT, or MAT will not be required by the university to supply the results of those tests, although they are welcome to submit scores voluntarily."