I think he's referring to the associate principal.
BTW - I wanted to ask. How many principals do you guys have?
In elementary school, we had 1 principal, 1 asst. principal.
Middle school... 1 building principal; 4 astt. principals (one for each grade); 4 asst. administrators (like an asst. asst. principal, and again, one per grade).
High school (at Penn Hills)... 1 building principal, 3 astt. principals (one for each grade); 3 asst. administrators (like an asst. asst. principal, and again, one per grade).
Here, we have 1 principal, 1 asst. principal.