For travelers coming into the US, effective January 26, 2021, proof of a negative COVID test taken within 72 hours of boarding will be required.
See US Department of State Travel Advisories for more info.

Change of Status Application Process

Change of Status: Travel Abroad and Re-entry
You need to leave the U.S., obtain an F-1 US Entry Visa while abroad, and re-enter the US in F-1 status. Steps in detail: Obtain an I-20 issued ...
Tue, 4 Feb, 2020 at 6:27 PM
Change of Status: Apply to USCIS (I-539)
Before applying, note that: Although the International Student Office can give general guidance on the I-539 process, we are not able to give legal advice....
Fri, 13 Nov, 2020 at 12:34 PM