I'm currently reading it, and yes it should. It's the best book i have ever read, and i definitely recommend others to read it! Best book I have ever read at my school, and i want to read it again some time. People may hate, but it is still great.
No single work of literature should be mandatory at the high school level. The most effective way to turn someone off of a brilliant work of art is forcing them to study it. I'm so glad that A Catcher in the Rye was not on some reading list and that, instead, I had the opportunity to discover it for myself.