Student I.D for a job?

I need my student I.D for a job but the thing is.. I can't find it. I'm only 15 so it wasn't a huge deal for me since all it does is it allows you to check out library books in my school. Now they told me to bring it and I can not find it. Do they just want to see it to prove you go to the school? If so, would you think a report card or a student bus pass be okay? My bus pass states I'm a student of the school, as well as the year and a picture. It has everything my student I.d has.