> For the complete documentation index, see [llms.txt](https://ismms-gs.gitbook.io/graduate-student-handbook/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ismms-gs.gitbook.io/graduate-student-handbook/chapter-3/enrollment-and-registration/leave-withdrawal-and-readmission.md).

# 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)