Most golf schools brag about their computer swing analysis and video capabilities. These are tools most local club pros can't afford to offer. They can be helpful, but the staff must know how to use them without overloading students with too much information. If this is important to you, ask how much high-tech analysis is included. Schools should provide take-home materials, such as a workbook or video, noting improvement priorities and the keys to reaching them.
Some schools allow alumni to send in videotapes for a post-school checkup.
Others let students call or E-mail to discuss problems after they've returned home. This happens because you must practice for an extended period of time if you hope to break old bad habits and create new good ones. Attending a school is a good start, but not nearly enough time to change a swing permanently. If you can't commit to at least two or three practice sessions a week for the two months following the school, you probably won't ingrain much improvement into your game. When you schedule a trip to school, also schedule the follow-up practice.