My family says they can't find me as a teacher option for next year.
Check this article out for information about this situation: Teacher Selection for Returning Students
Has my student re-enrolled?
Check this article out for instructions to verify student enrollment: Checking Re-Enrollment Status
Parent is getting the message There are no students eligible to Re-Enroll at this time.
This occurs when the parent is using an inactive account. Some parents have multiple accounts and they saved the login information for the inactive account. The student facesheet reflects the active account and username information.