[tworats]

I went to public school in Iran until the age of 12, private school in the UK from 12 to 15, and spent my final year in public school in the US.

Observations:

Math: what I was learning as a junior or senior in the UK/US was what I'd already covered as an 11-12 year old in Iran. The only new subject we covered was calculus. That really sucks and is a big concern for me since my kids go to public school in the US.

Science: was very hands-on in the UK (lots of experiments and labs). Much better for learning than the text book approach in Iran. I only had 1 year in the US, but it was much less hands on as well.