IB, from what I hear, has a tremendous amount of homework. I would imagine that taking a college course can broaden education. Gap year programs are also important parts of the puzzle. Science fairs and the various academic competitions can be useful. Mentorships and Internships can be used. This isn't a bridge I've crossed yet, but I've been keeping my ears open. My understanding is that in HS it's the extracurriculars that expand horizons. Does your child have a special interest that can be met that way?
Best Wishes,
Trinity
