A student who moves between American colleges frequently arrives to find that some completed coursework does not count. The loss is structural rather than a paperwork failure.
Three separate decisions look like one
The receiving institution decides whether a course transfers at all, then whether it satisfies a specific requirement, then how it applies to the chosen major.
A course can clear the first test and fail the second, arriving as elective credit that counts toward total hours but satisfies nothing the degree specifically requires.
Students often hear that their credits transferred and later discover their expected graduation date has not moved, because the credits landed in the elective category.
Equivalency is a judgment, not a lookup
Faculty in the receiving department typically decide whether an outside course covers enough of their own course to substitute for it.
That judgment rests on syllabi, contact hours and topic coverage, and reasonable departments reach different conclusions about the same course.
Because the judgment is local, an identical course can transfer cleanly to one institution and only partially to another in the same state.
Articulation agreements narrow the problem
Many states have agreements specifying that named courses at community colleges satisfy named requirements at public universities, published for students as transfer guides.
Some states go further with common course numbering or a transferable general education core that public institutions must accept as a block.
These agreements typically bind public institutions within one state. Moving across state lines or to a private institution generally returns the student to case-by-case review.
Why majors are where credits are lost
General education requirements are broad and absorb outside coursework easily. Major requirements are specific, sequenced and often assume particular prerequisites.
A student who transfers after choosing a major carries courses selected for a different program's sequence, and those may not map onto the new one.
Changing major at the same time as changing institution compounds the effect, which is why advisers press transfer students to settle on a program as early as possible.
What the loss actually costs
Unapplied credits represent tuition already paid and semesters already spent, and extra terms can also affect financial aid eligibility, which is limited by measures of academic progress.
Students who transfer more than once accumulate the effect, and those attending part-time while working are most exposed because their timeline is already long.
Rules vary by state, system and institution and are revised regularly, so students considering a move should get a written credit evaluation from the receiving school before enrolling.