I believe you previously posted this question and received a response. The Agency likely denied your benefits because you voluntarily quit your part-time job and because you returned to school. Have you appealed your determination, yet? There are strict time requirements to file an appeal. Like the answer to your previous post suggested, you would need to convince the agency that you're available and seeking full-time work and that you did not voluntarily quit your employment.
This answer is for information purposes only and is not legal advice. I am not your attorney unless you and I have signed an engagement letter.