there are at least 78 per state so multiply that by 50 and get 390
Check out the link below for National Federation of State High School Associations. The updates are done regularly so depending on when you are looking for the answer to this question, this is the agency to go to! I don't know that anyone knows the answer to that. Just about every high school in the U.S. plays basketball. So I would say there are several thousand high schools that play basketball.
there are four periods in basketball
All basketball hoops are 10' high, which is 120".
there are many but some of the most common ones are football, baseball, basketball, softball, volleyball, and soccer.
About 20 percent :)
there is no shot clock in high school basketball
four
15
4
3
728
lots