After schnorring as many books as possible from my friends, I went out and paid NIS 636 for the remainder of new and used books ( a few titles are not available yet). Not bad for four children in school. The curriculum for high school math has changed, making all previous books for grades 10-12 obsolete. It’s the government’s way of demonstrating that they have some idea why the math scores have gone down so much (oops, my cynicism is showing). I had to buy two new math books at NIS 100 each, way more than anything else, and will have to purge my current supply. Hopefully I will be able to pass the new ones down!