Puzzled Uni Student

I've read some earlier questions on legal use of clip art and I believe you
can't use it or other media to create a logo. I have just created a logo
using a slightly modified clip art for a university assignment (my artistic
skills are poor and the clip art displayed what I needed my fake company to
represent). As this is a non-commercial enterprise does it fall under the
personal use category or should it still follow the rules for commercial use?