Proving affirmative consent in a sexual misconduct case is not easy, but it can be done. It's going to be based upon the evidence as to say what the complainant's testimony is, what the respondent's testimony is, what witnesses' testimony would be regarding the matter. Say, people that saw the parties before their alleged interaction for example. Documentary evidence such as text messages, social media posts regarding the matter, expert reports can be obtained as appropriate to the circumstances, say, a forensic toxicology report.
That's not, say, always necessary, but there's no overcoming these cases because so much is at stake but ultimately, people who saw the parties, the parties themselves can describe their state or what took place leading up to and during the interaction, the sexual or intimate action that is. Consent it's not easy to prove, but by taking a dedicated approach to presenting all necessary and available evidence that would help the cause, that's how consent can be proven in a college sexual misconduct case. Then an experienced attorney advisor can help best prepare you and defend against such allegations.