To remove a "No School" event, please follow these steps:

1. Click on the event as it appears in your plans, or click Go To -> Events and locate the event there and click on the event. 

2. Click the three-dot icon in the upper-right corner

3. Select "Delete".

If you are not seeing events appearing, you can ensure those are shown by clicking the "View" button in the upper-right corner of the screen and checking the box for "Events".