For high school chemistry, yes.
What I like about Athena's is that it's there for your learning. It depends on the child if he/she wants to do all of it. One doesn't even have to do the reading.
They really want the questions answers, and for the student to comment on other's answers every week. This buildsa community. Otherwise, it's up to the student what he/she gets out of it.
AP Psychology too. Lots of reading from a college level text.
Not sure about the other classes though. I would assume they would be the same. Especially, any courses that are for high schoolers. Not sure about the courses that say grades 7 - 12th though.