Mark,
Welcome to the Dallas area! I am Director of Instruction at D.A.'s Spring Creek Golf. I have been exclusively coaching for the last 17 years of my PGA career and have developed many young players into college and professional players. I am located in the north Plano area at Dallas North Tollway and Spring Creek Parkway (just south of 121).
Your son sounds like, with a little help, can become a valued member of one of the currrent McKinney golf teams. I currently work with and have worked with many McKinney (McKinney, North and Boyd) high schoolers. Would be glad to give you their parents as references. Would be glad to look at your son and help him with his game. e-mail me at srobbins@dasspringcreekgolf.com or call 972-378-6631, ext. 1. You can look at my information at www.dasspringcreekgolf.com under "instructors."
If this doesn't work for you, I would be glad to recommend some other options.
Scott Robbins