We went through the process to save scores. I would suggest you call the College Board and ask what specific information you need to include in your letter because as I recall there was a specific list of information. It can simply say something like "Please keep scores for x date for y student, birthdate, blah blah."
Most people do find their scores go up in high school and you probably will want to take it again. If you end up as a possible candidate for National Merit you will need more recent SAT scores as confirmation. I wouldn't worry though that it any scores from middle school will look bad later.
