Bedford Public Schools issued the following announcement on Jan 13.
Dr. Shultz has emailed families with an update to Bedford's COVID Protocols. The biggest change is to the isolation and quarantining protocols. A Test-to-Stay option for close contacts will now be offered (beginning on Tuesday, January 18, 2022).
Please see your email or our website (http://bedford.ss16.sharpschool.com/cms/One.aspx...) for full details.
He also shared the following link in his email where the CDC explains why it made the changes:
https://www.cdc.gov/.../quarantine-isolation-background.html
Original source can be found here.