The University of Kentucky's New Maps Plus program is not currently accepting applications for its Master's program. I contacted the program via e-mail for comment, but have not heard back.
The Wade Edwards Learning Lab in Raleigh teaches young people GIS. "GAPS: The center's Geospatial Mapping program begins in a month. The eight-week program will take place on Saturday mornings for students in grades eight to ten who are interested in STEM."