Is it acceptable for paid online course to use quizzes and materials from elsewhere on the internet? This question is specifically about a high school course, but it should be applicable to any online course in general.

I was taking a physics course online to skip it in school, those courses are really expensive, so I took the cheapest one that my school was allowing me to take, and it was understandably low quality. This much was ok and expected.

What wasn't ok however, was that all the questions on the quizzes and exams were stolen from the internet. Every single question was taken from some school's "Ch 3 Review Sheet" or "2008 XYZ High School Physics Final Exam" etc. that was made public online.

My parents paid $500 for this course and the people didn't actually write anything themselves, and I'm pretty angry.

So my question is twofold:


Is it ok for a course to do this?
If not, is there any official organization I can complain to.
Is it ok for a course to do this?


It is common for instructors to use teaching materials from outside sources. There is generally no expectation of originality when it comes to teaching materials, including lecture slides, assignments and exam questions (which may be provided by the publisher, especially at the high school and undergrad level). See this answer for details.

This is similar to the way we don't consider politicians to have plagiarised when they give a speech that was written by a speechwriter - in that scenario, too, there is no expectation that the material was written by the politician who delivers it. (In that situation, we only seem to mind if the speechwriter lifts parts of the speech from another source...) But if a student submits a homework assignment that was written for him by someone else, or an advisor puts chunks of her student's thesis in a paper without proper attribution, we would consider that plagiarism, because there is an expectation of originality.

You wrote


  I'm not getting taught off a textbook here that comes with a set of slides and test questions, I'm supposed to be paying them to write their own material.


I'm not sure why you think so. You're not paying anyone to develop course materials. It is common for instructors to use prepared material, including slides, test bank questions, etc. that might come with the textbook. It's also common for instructors to share material between themselves. 

What you are paying for is for them to deliver an effective educational experience to you. If they have been educating you effectively, it shouldn't matter whether the materials are original, or whether they came from a test bank or other outside source. If they haven't been educating you effectively, you can complain on those grounds - not because you expect them to develop original materials.


  If not, is there any official organization I can complain to.


If you believe you have been treated to a sub-par educational experience, you can complain to whomever is responsible for the course.