On any given "pick & roll"....
1) The "pick" or screen part of the play is covered under the screening principles outlined in NFHS rule 4-40.
2) The "roll" part of the play that comes immediately
after the pick/screen ended is covered by the guarding principles outlined in NFHS rule 4-23.
3) For contact occuring during both the "pick" and the "roll", you also have to know the principles for illegal & legal use of hands as defined under NFHS rule 4-24, the principles used to determine if any contact is incidental or not-as defined in NFHS rule 4-27, and the contact principles outlined in NFHS rule 10-6.
Rules rulz!
THAT'S ALL YOU NEED TO FREAKING KNOW!!!
The rest is just details.
Time for my afternoon nappy now....
Carry on carrying on.