Complex sentence: It has after programs such as Band, Mock trail team, chess, masterminds, J.R.O.T.C. (which is also a class along with the law) and sport teams the major ones are football, track and field, wrestling, baseball, and softball.
Split into simpler sentences: It has after programs such as Band, the Mock trail team, chess, masterminds, J.R.O.T.C. (which is also a class along with the law), and sport teams. The major programs are football, track and field, wrestling, baseball, and softball.