Hi jiwon,
Make sure you get Windows 10 Education through your school’s online store.
Or we could search for your school to see if you're eligible with the link bleow.
https://onthehub.com/windows-10-education/#Students
I consider that the best way to resolve this issue is by contacting your university IT admin. They can share all the information about the license.
Microsoft usually has an affiliation with schools, colleges, and universities, which allows their students to use Windows 10 Education for free.
Best Regards,
Carl