Just adding my memories of IB in high school. I was an almost straight-A student and wanted to do IB. My mom said no- I could take a few AP and even the IB "Theory of Knowledge" class that was open to all honors students, but not apply to the IB program. Her reason was simple she wanted me to have a life. While I did learn a lot and enjoy the "Theory of Knowledge" courses, I'm glad I didn't do the entire program. Several of my friends in the program were frequently up past midnight doing huge amounts of reading and writing and were overall stressed and exhausted.
I am not gifted and I don't believe my friends were either, just bright kids willing to put in the effort. If a child was really gifted in reading/writing/language it might be a great fit.
