If you have the opportunity, in the next few days, it might be kind to remind students, some of whom have only just come of voting age, that the deadline to register to vote is Monday. This does not have to be something that takes away classroom time, it is a message that can be chalked ahead of time or transmitted outside of class time.
For people who have a signature on file with the DMV, the process can now be accomplished completely online up until midnight on Monday from the CA Secretary of State’s website: https://rtv.sos.ca.gov/elections/register-to-vote/
Those without a signature on file must deliver the signed form or mail it postmarked Monday.