Because of the static dimensions to the interface, many schools will not be able to initially see blocks later in the day and the scroll bar to shift to the right is located at the bottom of the interface, well out of site.

The current design requires the user to scroll all the way to the bottom, scroll to the right, and then scroll back up to the top. This is rather un-intuitive and clumsy to work within.  

Adding a horizontal scroll at the top of the interface would greatly improve navigation and avoid frustrations.