There are essentially two kinds of academic dismissal situations:
Dismissal from your degree/major program
If you fail to meet your degree/major program's minimum academic standards, you could be dismissed from the program for one or more semesters. If you wish to continue in the same degree, you might become eligible to apply for reinstatement into the program, and should consult your school with related questions.
On the other hand, if you aren't sure whether you wish to continue with the same degree and want to discuss alternatives, you are welcome to complete the Students in Transition (SIT) referral form. An SIT advisor will be in touch.
If you are dismissed from your degree/major, you might still be in good academic standing according to University standards (2.00+ IU GPA). It is also possible you might be in academic probation status rather than dismissal status according to Students in Transition standards, and possibly eligible to enroll through SIT.
In either case, or if you simply wish to discuss your interests and alternatives, you are welcome to complete the SIT referral form. An SIT advisor can explain your academic status and discuss options with you.
Dismissal from both your degree/major program and from the University
If you have been dismissed from your degree/major program, and would also be in academic dismissal status according to SIT standards, you will be ineligible to enroll at IU Bloomington for one or two semesters. You are welcome to complete the SIT referral form, and an SIT advisor can explain your academic status and discuss options with you.