Yes, every one is a student, everyone has a right to choose there own way and that makes you eligible for applying for DUET.
Now, before applying for DUET, you should possess the eligibility criteria. As you haven't mentioned a particular course, I can't help you in providing details about particular course.
Eligibility criteria varies from course to course. Look at the Eligiblity criteria for different courses,
B.TECH Eligiblity criteria,
- Must be 10+2 passed with 60% as mathematics as mandatory subject in qualifying examination
B.A hons in humanities and social science Eligiblity criteria,
- Must be 10+2 passed with 60% in four subjects
- Where as BA in multimedia needs 75% as mass multimedia as mandatory subject
So, you can see how Eligiblity varies from course to course if your courses is not mentioned here then go through the link it give details about all the courses briefly.