Obviously they can or they wouldn't have. They are seperate offences.Can they really duplicate each charge because it was on school grounds?
Your a third party here. The details of the search that could help us determine if it was legal were left out. There is also your friends side and the officers side. He needs an attorney to determine if the search was legal or not.Does the simple fact of him having windows tinted, and even if the officer had clear sight of the bat in the back would that give him enough reason to search the vehicle?
Your friend needs an attorney and striaght away.
Since he is attending high school at a college campus, expect the high school have their crack at him. I can also guess that he will face expulsion with the school as well.
You can search the california penal code to see possible fines.

