The Penn State World Campus Certificate Program in GIS is a noncredit program designed to meet the needs and busy schedules of full-time professionals. Students earn the Certificate of Achievement in GIS by successfully completing four courses. Most courses are offered four times a year, starting in January, April, July, and October. Most courses are ten weeks in length, involving approximately 100 hours of student activity (depending on your prior computing and GIS experience). Earn your certificate of achievement in less than twelve months.
http://www.worldcampus.psu.edu/pub/gis/index.shtml