Warn
Investigating - We are aware of and investigating an issue disrupting access to the mCLASS Instruction page. Our Product and Engineering teams are working diligently to identify the root cause of and implement a fix for this issue.We will update this page once we have more information.Thank you so much for your patience! Nov 12, 2025 - 12:03 EST
Last update on
Warn
Identified - We have identified the issue that is affecting Search in the all regions and are working to resolve as quickly as possible. Search queries may continue to experience issues until resolved. Nov 12, 2025 - 15:17 UTC
Last update on
26 Services
1 Column
2 Column
3 Column
Houghton Mifflin Harcourt