How can I win my appeals case? Can the EDD tell me I can't work, when I can?!

I was denied unemployment benefits from EDD after a phone interview where it was determined by EDD that I was unable to work full time hours as I am a full time student. While I worked for my employer 45 hrs a week, I was also a full time student so I did not attend schooling after being terminated from my position. So how can EDD determine that I'm unable to work full time when clearly I've done so before? How can I properly fight my case at the appeals board? What information do I bring? Will my employer be present during the hearing? Or am I only going against the EDD interview? Please help!