High School & Junior High School Basketball Court. The main difference between a college basketball court and a high school basketball court is the length. While college courts are 94' long, high school courts are 84'. Junior high courts are even smaller at 74' and play with a width of 42'. The other primary difference is high school courts generally do not have a restricted arc under the basket. The three-point line is 19' 9 on both high school and junior high basketball courts.