[Redhouse]

Glad to see more fans trying to find out information so that they can be better informed as a spectator. The question is a little more detailed than you may think. I will provide you with definitions that may help you. Also, if you are interested you may contact the National Federation of State High School Associations and obtain a rule book for you to refer to.

Blocking: ilegal personal contact which impedes the progress of an opponent with or without the ball.

Charging: illegal personal contact caused by pushing or moving into an opponents torso.

To obtain an initial legal guarding position:
1. The guard must have both feet touching the playing court
2. The front of the guards torso must be facing the opponent

This may be just enough to confuse you, hopefully not. Best thing to do is pick up a rule book. There are a lot of additional bullet points under these definitions. I hope this helps you a little.