The Undergraduate catalog defines academic probation and the retention standards students must meet in order to avoid academic dismissal. Click here to read the catalog section titled "Academic Standing - Requirements for Continued Enrollment."
You'll see that if you're on academic probation, you must meet retention standards based on your class standing in order to avoid academic dismissal at the end of the current term. For retention purposes, your class standing is based on the credits you will have earned at the end of this current term:
First-term students who earn a term GPA of less than .85 will be dismissed immediately after their first term. There is no probation semester for first-term students if they earn less than a 0.85 term GPA.
If you're on probation, you need to know the difference between two types of GPA:
If your academic status is listed as Probation (Dean's Option) or PD, then you were academically dismissed, reapplied for admission and petitioned to return after academic dismissal, and were permitted to return to your ISU studies under this special form of probation. Everything that applies to a student on academic probation also applies to you. In addition, you also have the added challenge of recovering from one (and possibly two) academic dismissals.
Generally, no. You must return to good academic standing before a new academic department will accept you as their major or minor.
However, this does not mean that you should continue to take
courses in a major in which you've already decided you cannot
succeed. Feel free to contact the department of your desired major
and find out which courses you should be taking; discuss your
situation openly with your current academic advisor.