Calling and Reporting Fouls
How to Report a Flag That You Have Thrown
When reporting a flag to the Referee, reminder that he or she has a ton of other stuff on their mind.  Let them know from the start that you have a flag with the blast of short whistles to indicate to the Referee that there is a flag on the play.  Try and make it as simple and as understanding as possible.  Repeat it to yourself first and then once the Referee gets to you or you get to him.  Say it again; this time say it like you are the Referee.  Always try to explain it like you want it told to you.
First Things First
Who:  Which team was it on?  Offensive or defensive
What:  What is the foul?  Know the penalty and the sign for the flag.
When:  Where is the flag and what is the yardage for that flag?
All of this is for the Referee.  Remember to be "short and sweet" and to the point.
Example:  Holding on the Offense at the 35-yard line during the run.  If accepted, 10 yards from the spot and replay the down.
Repeating this to each other will help make sure that you both are on the same page.  If you have more that one flag, then the key is LISTENING!  Only one person should be talking at a time.  Then, only one person can report the flag to the Referee.
Wait, you STILL are not done
Surely the head coach is going to want to know what happened on that play or what you saw.  This is how you report it:
Always use an action verb to describe what happened on the play.  Remember, you don't have all day to discuss the foul with the head coach so keep it short and to the point.
Example:  Coach, I saw your player Pull and Drag the other player to the ground.
Action verbs are telling the coach that you know exactly what has happened, and it cuts down on his questioning to you.
Fouls During Plays With A Change of Possession
Reporting A Foul to the Referee
Six Types of Holding
Official Football Signals
Calling Pass Interference
Legal Blocking