Can I leave early [each week]?

Waiting for me in my inbox this morning: "I just wanted to let you know, I may have to leave a little bit early during your class so I'm not too late to another class I have which happens to be at [a different campus an hour away]."

I admit I haven't finished my first cup of coffee yet, but it seems to me that this is going to be a weekly issue, so I responded that the student should see if the other professor will allow them to come late to their class each week instead. And then I suggested they find a different section of one of our classes. I managed to say that without sounding too snarky. I think...

Edit: punctuation. It's very early here.