Who's the teacher here?

On Friday I had my first "intercambio" with the husband of one of my business students. She had mentioned to me that has was looking for some English lessons, and since I was also in search of some language improvement myself, in the end we decided the best way to approach the situation would be with a language exchange. He completed his masters degree in the US several years ago and was looking to brush up, and I was looking for someone to help me in a more academic capacity, and who better to do that than a college professor himself.
I'm looking at several job opportunities in the US that would require me to have a formal language evaluation, and where I need to improve my skills is discussing more academic topics at length. I haven't had formal practice with this for years, and although you can often practice this naturally in social situations, I tend to be more of a listener in large groups of Spanish speakers and haven't yet reached the comfort zone where I jump in to give extended length opinions on social or political topics.
What's also important is that my partner knows "correct" Spanish, so he has already helped me a lot with little suggestions to tune a few things up, knowing that my ultimate goal isn't to learn Chilean Spanish, but to use "proper" Spanish in a more academic context.
He also gave me a lot of homework, I have to give a presentation the next time I see him, something about how we attribute archeological studies to the value of a culture. He doesn't mess around, and while I speak he writes things down in his little notebook to give me feedback.

So much for meeting at a cafe to drink coffee and chat, my teacher is strict!