Its not even like I go to every event I would just like to get a few good shots of my daughter participating in her events without interfering. My wife was just saying she thinks there may be some sort of pass I can get so I'm going to look into it a bit more if not then ill just shoot from the sidelines I don't want to make a big deal out of it. I highly doubt anyone would have an issue with me taking pictures there are a lot of parents doing this.
Although talking to the coach may or may not be helpful the people you want to speak with are the Athletic Director for your school, the Principal, or someone at the Board of Education in charge of editorial and photographical releases. The principal should be able to direct you to the correct person same as the athletic director. This is specific to your desire to be on the sidelines/in the field event areas. Without prior permission to shoot as part of the yearbook staff or some prior understanding and possibly filing and signing of certain forms each school/district has it's own set of legal issues that they usually want taken care of.
Now if you are in the stands or in an area that any other spectating parent is normal not warded off from and taking pictures and you are only shooting YOUR specific child you are ok (unless other people are identifiable and then you come into a different set of issues). I know in our district students and athletes get forms allowing video and photographic releases that must be signed by parents and sometimes you have them say they do not allow such. There is an ever shifting line on how many people view this and where you can stand legally it seems.
None of this advice even covers the issue of selling prints... that might come into other problems as sometimes schools and districts have exclusive contracts with certain people or companies for specific niches in terms of photography for their schools and districts (and that is also a different argumentative ball of wax!)