Here are a couple version of the accordion FAQ plugins.
Note: all of these things work on what WP calls “short codes” — they really just codes that you place in the content editor — similar to embedding a video or an IS script. If you are logged in to the site when viewing this page, you can open the editor and see the shortcodes. It’s really exciting 🙂
This one is the Genesis FAQ plugin. Some advantages is that each question has it’s own short code (so that short code could be put on multiple course modules (or any page) as necessary (which would mean if you need to update an FAQ question, you can do that once, and it will update any place that shortcode is placed. Anchor linking to an individual question on a page should be possible (I think). One problem is that it is inheriting colors (not sure how to change that). Another problem is I’m not sure why there is such a gap between each question.
This is another plugin which has 10,000 users and a lot 5-star ratings. It was really easy to set up and customize colors, however, it doesn’t work right now (it’s not allowing me to expand/collapse each question). The initial view of the support forum suggests that it might either be conflicting with another plug (it’s not the Genesis one, though — I tried that) — or that some sort of “js query” thing needs to be updated on the site (OMG! 🙂 ) Anchor linking to an individual question would not be possible.