I have a copy of Linus Pauling's General Chemistry in my house (3rd edition). It is far beyond "high school level understanding of chemistry". The book assumes that you know a good amount of calculus and physics, so even some of the general chemistry students at colleges might consider this text to be difficult, even the book is targeted for those students.
So if you'd like to take a challenge, go for it. But if all you need is to understand high school chemistry, this is bit of an overdose.