Ok... So.
It's a complicated definition. Here is the official AMCAS Guide to filling in your coursework.
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The following rules will help you determine the appropriate AMCAS School Year for all of your course work (including foreign course work):
· Do not assign more than one status to a term.
· Once your undergraduate Academic Status (FR, SO, JR, SR) has advanced (e.g., FR to SO), do not assign the previous status (e.g., FR) to subsequently completed course work.
· Assign High School (HS) status to college-level courses taken while you were in high school, regardless of the physical location of the college-level course.
· Assign Freshman (FR) status to Advanced Placement, Exempt, or CLEP credit awarded when you first entered college.
· Junior/Community College courses (e.g., associate degree course work) should usually be listed as FR or SO if you took them before you attended a four-year institution. For attendance longer than two years at the same school, JR status - depending on the number of credits - may be entered.
· Assign the upcoming status to summer session courses (e.g., summer courses between your freshman and sophomore years should be assigned Sophomore (SO) status).
· Courses for a Bachelor's degree earned in three years should be assigned Freshman (FR), Sophomore (SO), or Senior (SR) statuses.
· Courses for a Bachelor's degree earned in more than four years should be assigned statuses of Freshman (FR), Sophomore (SO), Junior (JR), Senior (SR), Senior (SR), etc.
· Assign Post Baccalaureate (PB) status to any undergraduate level course work you enrolled in:
· After receipt of your initial BA/BS degree.
· While enrolled in a graduate program, if course work is not applied to a graduate degree.
· Assign Graduate (GR) status to any professional or graduate-level course work that is not applied to an undergraduate degree.
· Do NOT assign Graduate (GR) status to any professional or graduate-level course work applied to an undergraduate degree. Assign appropriate undergraduate status (FR, SO, JR, SR).