Just chalk it up as a learning experience... Probably nerves from being out of your comfort zone. A session with less experienced players may have been more productive. Maybe the school will have another clinic for less experienced player. I doesn't hurt to socialize with other with similar interest.
I been overwhelmed most every time I try to take lessons. Even a lesson with a friend I work with for years was pretty much a wash.
Hang in there for your own enjoyment.