Verification is currently underway for the maintenance items.
Posted Oct 17, 2020 - 00:40 PDT
In progress
Scheduled maintenance is currently in progress. We will provide updates as necessary.
Posted Oct 16, 2020 - 18:01 PDT
Scheduled
ck12.org will be unavailable starting Friday, October 16, 6:00 PM PDT to Saturday, October 17, 2020, 6:00 PM PDT. We apologize for any inconvenience. Thank you for your patience as we improve the site.