Why are you dressed up?

I get this question at least once a week. I wear business casual every day to business school, but people seem to think you need a reason to dress up to go to school. Don't get me wrong, I love a good pair of basketball shorts and t-shirt as much as the next guy, but in my opinion, business school is enough of a reason. Here is why:

1. The better you dress, the better you perform. I remember in high school people would show up for finals in sweats and slippers. One year before finals, one of our teachers showed us a study about how you perform being directly proportional to your appearance/dress. I completely agree. If you have ever worked from home or tried to do homework at home, you have probably noticed this. You sit down at your desk but it takes forever to get going. By showing up in business casual, I feel prepared to perform in a business situation and discuss business topics.
2. Dress the part. If you are attending business school, you should dress the part. I know that some companies offer the "benefit" of wearing shorts and flip-flops to work, but most don't. Business people wear business clothing. If you are attending business school you should probably dress the part. The professors should not be the only ones dressed up.
3. First Impressions. One of the reasons I came back to school was to build up my network. The network I am building is made up of people I am meeting here at school. Dressing up contributes to my first and subsequent impressions with my network.
4. You never know who you will run into. Last year I always showed up early for my first class in the morning to prepare for the day. One day while I was sitting in the classroom, a guest speaker showed up early as well. He sat down next to me and we had a 30 minute chat. Turns out he was the CMO for one of the top Fortune 500 companies. Imagine if I was wearing flip-flops and a backwards hat. This year, I have had info sessions pop-up almost every other day. Instead of running home to change, I can take that time to do my research on the company and relax.

So why I am dressed up? To be more successful.