Internship with a marketing professor

Hi everyone, I’m an international student who wants to study business at undergrad. I recently contacted the best business school in my country and landed an internship with a marketing professor. The professor told me I would have to work long hours in the summer with him and this would significantly improve my skills. Will this be beneficial for me? Could I be doing something better that would help me more?

Any help would be much appreciated.

That’s a great thing to do and will substantially help you, the professor is correct.