I submitted the same work to two classes, and now the college is saying I self-plagiarized. What should I do now?

Many schools will have policies that prohibit self-plagiarism or a student using his or her own work for another purpose. If you're accused of self-plagiarism, the specific facts and circumstances of the case would have to be considered. Question to be asked in part would be did either professor prohibit or disallow a student from submitting work from another assignment? Would it have been otherwise appropriate to do so?

Surely not plagiarizing someone else's work, but there are going to be instances where using your own work would be an offense to be charged on the school's code of conduct or academic misconduct policies. It is highly fact and case-specific. Having an experienced attorney advisor will be your best ally to help you understand and navigate the process and to help you take the best steps forward in an academic misconduct case.