It depends on what type of jury duty you will be serving. Usually for the smaller, local county summons, they will excuse you if you are in school during the school year, but then will throw your name back into the pile to be called another date. But, if it's Federal Jury Duty you are summoned for .... the situation is very different. I have been summoned several times for my local county and since I went to school 400 miles from home, I was excused. But then I was summoned for Federal Jury Duty!! Did you know there was such a difference? No way would they let me out. I had to send in a letter from my undergrad and the court demanded I would come during my summer break. Absolutely no excuses. That means people who have "important" full-time jobs, own businesses, CEO's, whatever ..... no excuses. I was supposed to begin a very important grant-related research and was unable to get out of the Federal Jury Duty. Many people were counting on my time being put into the lab. It was such a headache. Plus, the Federal Jury summons was for the biggest city in my state which happened to be 100 miles away from home. Even my uncle who is a lawyer and knew my circumstances couldn't get me excused or released. They expected me to show every day ..... and yup, I was chosen for a 2 week jury. It was quite a learning situation since the case had to do with an injury. I learned alot about our judicial system and will NEVER be called again to serve on a Federal Jury. I understand one only has to serve once in a life-time for Federal Jury duty. I had never heard of anyone in my family, friends or anyone serving on a Federal Jury 100 miles away from their county. It was the biggest hassle of my life. But I did it and made it work out with lots of help from friends, family and patience on the part of my lab partners. Good luck and if it's Federal Jury Duty, at least go the first day and try to get out of it. Then your name will not go into the pile again. If you don't get let go, you could then apply for a deferral - but there will never be an easy time to serve. I kept telling myself that I was serving in a safe, clean, cozy jury room --- not Iraq. THAT put the situation into perspective real quick.