Rape cases with actual evidence are handled through the courts. The policies in question are about cases where there is no evidence and thus no justified basis to punish the accused. Proponents of the proposed policies want to punish these students anyway, and putting political pressure on colleges to do so is their only leverage.
No, that's not how it works.
Violations of the Student Code of Conduct are handled by the disciplinary board at the college or university where they reportedly took place. Some of the possible violations are also crimes, such as rape, robbery, and battery. Some of them are misdemeanor offenses, such as underage drinking and unpaid parking tickets. Some of them are not crimes but are still against the rules and can get a student expelled, such as cheating on exams or plagiarism.
What we keep arguing is this:
1) should a college or university address reports of criminal wrongdoing on campus through their own disciplinary process, or should they always refer such cases to the police and take no other action;
2) should a college or university disciplinary board proceed independently, regardless of whether the local Prosecutor brings criminal charges against an accused student, or should the schools wait for a verdict in a court of law before taking any action;
3) what standard should a college or university use for reaching conclusions during disciplinary hearings, proof beyond a reasonable doubt or preponderance of evidence?
Apparently, some folks have a hard time accepting the notion that a college can expel a student according to its own rules and policies, which may or may not have anything in common with the penal code.