# Leave, Withdrawal, and Readmission This section covers leave, withdrawal, and readmission policies for the ISMMS Graduate School of Biomedical Sciences. Students can find the following information in this chapter. * [Leave of Absence (Voluntary)](/graduate-student-handbook/chapter-3/enrollment-and-registration/leave-withdrawal-and-readmission/leave-of-absence-voluntary.md) * [Leave of Absence (Involuntary)](/graduate-student-handbook/chapter-3/enrollment-and-registration/leave-withdrawal-and-readmission/leave-of-absence-involuntary.md) * [Parental Leave](/graduate-student-handbook/chapter-3/enrollment-and-registration/leave-withdrawal-and-readmission/parental-leave.md) * [Return from Military Service](/graduate-student-handbook/chapter-3/enrollment-and-registration/leave-withdrawal-and-readmission/return-from-military-service.md) * [Withdrawal and Readmission](/graduate-student-handbook/chapter-3/enrollment-and-registration/leave-withdrawal-and-readmission/school-withdrawal-and-readmission.md) * [PhD in Biomedical Sciences and Neurosciences Vacation Policy](/graduate-student-handbook/chapter-3/enrollment-and-registration/leave-withdrawal-and-readmission/phd-in-biomedical-sciences-and-neuroscience-student-vacation-policy.md) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://ismms-gs.gitbook.io/graduate-student-handbook/chapter-3/enrollment-and-registration/leave-withdrawal-and-readmission.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.