What jurisdiction does the Alvin ISD Police Department have?

Do Alvin ISD police officers have any authority at school functions that are not held on district property (i.e. prom, graduation, sporting events)?

What authority do Alvin ISD Police Officer's have?

Can Alvin ISD officers arrest adults and/or juveniles?

Do Alvin ISD police officers write real tickets, and what happens to the tickets they write?

What role do Alvin ISD police officers play in discipline? 

Can Alvin ISD police officers take action against a non-student if they are not on school district property?

If other police department need assistance, can Alvin ISD police officers respond?