Ejection rules

In High School baseball is there a difference between a student being ejected and a student being disqualified? Example- my son slid into third in a JV game and hit the third baseman’s leg with his cleats. At the end of the inning my son was walking off the field and the third baseman cursed at him and threatened him. The umpire ejected him from the game and then we saw him playing the following day.