Interview for an apprenticeship, but student?

Hey, I have an interview for a position as an industrial clerk soon. I'm currently studying business administration… I'm also registered for the next semester. What kind of explanation does the HR person want for something like this? I just don't know how to explain it to him without him thinking I still want to study. During the semester break, I did a few internships and realized that this job is exactly what I want!
So, I'm very sure about my decision, but how can I explain it? Without having a permanent position, I didn't want to drop out of college, especially because of the taxes, etc.