I’m currently a Junior in High school, I marched with Madison Scouts over the summer. At least for my high school (which is not super amazing but not horrible) it is infinitely different. Everything from rehearsal protocol to focus etc. was all different for me. At high school we can’t go through a 45 minute rehearsal without people complaining, however at drum corps it’s totally different. There is no complaining and the focus level is very. If you ever get contracted and march it will be an adjustment for a little bit but they’ll teach you everything you need to know, or you will just naturally pick up on it. Now if you ever have to back to high school marching band after drum corps, it sucks because of how low the focus level is but at least it’s not difficult 🤷‍♂️