The South Carolina Geographic Alliance accepts participants from other states for its two summer institutes.
Please consider sending your teachers to us.
June 12-24: Alliance Summer Geography Institute. This is a traditional TC development institute. Lots of content, lots of field trips, 3 graduate credits.
Application materials here: http://www.cas.sc.edu/cege/events/asgi_events.html
June 12-17: Geotechnology Institute. One week of GIS, GPS, virtual globes – all tailored toward K-12 instruction.
Application materials here: http://www.cas.sc.edu/cege/events/gis.html
The application deadline for each is April 15, but I can extend that for your teachers. But work quickly so I can save spots for them.