Round Rock ISD issued the following announcement on Dec. 19
As the District dismissed for winter break, an internal reset of District systems changed some student’s District Google account or Chromebook login passwords. The District sent an email to parents/guardians on Saturday, Dec. 19 at 4:09 p.m. with information on how to request a password reset.
If you need further assistance, please email the District support desk.
Original source can be found here.