If you are having trouble selecting "Subcategories", "Select File" or noticing items that are "not selectable" please make sure your Java Script is turned On or Allowed on SchoolTube.com.
Users may also notice videos not able to be played or simple navigation seems inaccessible.
You may also want to make sure Compatibility Mode is turned Off if you are using IE
UPDATE: We have been notified about a widget on multiple pages may be causing issues with your filter. It is... cdn.gigya.com ...