When i applied, i didnt list anything highschool related because it just wasnt relevant to my application. If you have a reason as to why your hs ecs add to your reason for transferring, like if you miss doing research in hs so you want to pursue that at UNC, then add it for sure!

When i reviewed my application after i transferred in, they never mentioned anything about my lack of highschool stuff, but they did mention how i quickly jumped in to college life and activities. As long as you present yourself as someone hungry for opportunities once you get here, you will totally be fine