Should I include this in the Additional Information Section?

I’m applying as a domestic student, but I’m quite different from other U.S. students, probably even international students as well. I grew up in a Thai society, and learned in a Thai education system, and I feel that this adds diversity to my profile, diversity that the admission officer probably wouldn’t know much about if I didn’t include this. I already have a more important essay I want to use as my main one. Would it be okay if I wrote about this in the additional section?

I’m sorry, I forgot to say that I’d also talk about my school, which is quite different from most American high schools. It’s established by the Ministry of Science, focused on engineering and science, and the curriculum is complex to explain, so I’d be adding this as well.