Created by Joe Assell and Mike Clinton in 1995, GolfTEC is a United States golf instruction company, teaching more than 25% of golf lessons annually in the United States. GolfTEC has 172 locations across the United States, Canada, Japan, and Korea. The Green Room, a Canada-based golf instruction company, purchased the rights to GolfTEC Canada and opened the first GolfTEC in North Vancouver in early 2011. GolfTEC’s Corporate headquarters are located outside of Denver, Colorado. According to the GolfTEC website, the golf instruction company believes there are five aspects to golf improvement. GolfTEC originally used medical technology to monitor golf swings. The g-Swing technology is now patented by GolfTEC and an introductory one-hour swing evaluation shows the exact angles of rotation and bend of a client’s golf swing from address to follow-through. GolfTEC digitally recorded the golf swings of 150 PGA Tour professionals. The swing analysis of the tour players is used to provide numbers for use in Swing Evaluations.