Transfer student

Hey! I studied my Freshamn and Sophomore years in one high school and my Junior and Senior in another, and they are very different from eachother. In my 1st school, I was #1 and in my current, I’m on the top 10%. Should I have a teacher/counselour from each school on commonapp or is just one enough?

Can anyone tell me? I’m going to visit my old school’s town in a month or so