Ssrs 2012 page footer

in an ssrs 2012 report, my user would like a page footer to only be displayed when there is a specific 'group' changes. Basically this would only occur when a school name changes. This request is being made for a large school district that contains a large volume of schools.
If this is possible, would you tell me how to accomplish this goal? If this is not possible, would you let me know that also?