I'm skipping school after a fight with my parents, what should I do?

Today was supposed to be a fun day. My school was taking the students who signed up and paid 10 dollars to the theatre in the Capitol of the state, and I was one of those students. Only problem? My ******* brother spazzed out in the morning about how someone told him that the buses were going to leave at 8AM. I told him to shut the **** up because that's the time that we're suppose to be there, not the time that the buses were leaving. My luck though my parents both started spazzing out with him and started screaming at ME. I told them to calm down and finally crawled out of bed at 7:45 and was ready by 7:50. We live about 2-3 minutes from the high school. Well, my overreactive dad decided that I was lying and going to make my precious brother late so they left without me. He came back and started a fit about how I'm always on my phone and how I'm a lazy *** *****. He took my phone and started screaming at my mom about how she was to blame about my unmanageable behavior. I had enough so I crawled out of my bedroom window to avoid walking past them, went in through the kitchen door, grabbed my backpack and decided to walk. My mom came with the car and tried to console me to come with her since we live in a snowy cold region but I told her to go away. Eventually she gave up and I continued walking. Upon realizing that I was crying uncontrollably I figured that I couldn't sit through a whole day of school without some person asking me about **** which would result in my crying again. I walked all the way to the public library which took me about 1 hour and I'm sitting there now. What am I suppose to do? I can't go back to school because I'm way too sensitive right now. I'm an 18 year old high school senior, if that makes any difference.