<p>I am taking a Calculus course online this coming year (Multivariable though, not AB) and my school has already agreed to my plan and to fund it. What I found the school was looking for was a clear understanding on my part of the committment I was making (ie I planned to really work hard and finish the course) as well as explaining all the details of the course and giving them the website. In my case, I had the advantage that my school did not have a course to offer me, but I think you should have just as good a chance at approval. Just make sure to give your school as much information as possible about the course you choose and why want to take it and you should be fine. PM me if you have any other questions!</p>
<p>P.S. I’m in PA too! Where in the state are you?</p>