VIENNA (AP) — Students in Austria sitting down to take university entrance exams this week found themselves with a guaranteed pass — at least for a minute or two. The answers were already filled in.

The University of Salzburg says 144 would-be psychology students were given wrong envelopes Tuesday. Instead of the normal tests, they were handed copies with answers meant for the professors grading them.

The exams were quickly collected. Paul Lengenfelder of the university's psychology department said Thursday that the students will be re-tested next month.