Homecoming week is something that (just about) every school in America does. It is in the fall to show spirit and team pride before the final home football game of the season, ending in a homecoming dance or celebration.
During spirit week, schools have what are called "dress up days," which generally correlate with some type of theme. My freshman year, I didn't really get into spirit week. To start off, I didn't play sports or follow them much, so I didn't get as excited about the game as my peers. I was just glad if we won a game. Our team was pretty good (#1 in state that year) and that was exciting, but the idea of dressing up didn't really seem that great, and I wasn't sure if anyone else would participate.
Sophomore year on, I dressed up as well as I could and realized how fun the experience was. The more effort I put into a costume, the more fun I had wearing it. My costumes also served as a conversation piece, and helped me talk to classmates that I had never really met. I made a trip out of going to the thrift store with friends, and I found that no matter how wild or crazy I dressed, someone was always dressed crazier.
Overall, getting involved with spirit week is tons of fun. There are so many ways to show pride in your school, even if you don't necessarily love it.
Get excited to celebrate that time of your life. I just had my last homecoming week a couple weeks ago, and I had the best experience. For high school in general, it's important to remember you won't get that time back, and you have so many chances to make some of the greatest memories!