The story of Greg Mortinson and his pursuit to eventually build a ton of schools in Pakistan is a great one, but if you're over 12, I'd suggest that you read the actual version of Three Cups of Tea. It's a little more factual, and can get a bit boring at times as they describe the building process a little too extensively, etc. but it's generally a great book with a great lesson. There's a little bit of talk of sex, violence, etc. but nothing mature tweens and teens can't handle. An awesome story and an awesome man in this book.