If you want a scholarship you need to work and you need to remember that coaches will not look at you unless your lucky and they are there to see another player or they are there to see a tournament. If your not one of the lucky players you will need to send out a letter of interest. 

A letter of interest is the following:
  1. Introduction of who you are and that you want to play for his team and school 
  2. An overview of your Basketball career, included your age, age, grade, height, and weight
  3. State your interest in playing for his team(mention school history), and that your interested in earning a scholarship
  4. Include references like coaches and trainers
There are a lot of schools to send letters too, you can find a full list of schools on Wikipedia