Good SAT score?

Based on scores from Kaplan you are within the 25% competitive range this is definitely a good score for being a practice test. If you keep studying now etc. You will probably be on top when it comes time. Remember the higher the score and percentage on your SAT can open more chances to be accepted to many college's​ leaving you with more options.

um??? yes! that is super good dude, I'm almost a senior and getting a 1390. just keep up those math skills because I would get frustrated that I knew I learned certain math skills in like middle school and early high school but had forgotten them due to lack of review. You seem smart to be getting such a high score at such a young age though so maybe you don't need to worry about it at all.