It was the ESL Compass test, which is ACT’s equivalent of the computerized TOEFL.
I think that what happened is that this student’s entire focus, probably from the beginning of her English study was passing the TOEFL. She may even have taken TOEFL cram courses, so that now she can do wonders on standardized ESL tests without any real, practical command of English.
A few months ago I was called for private lessons by a South American dentist who claimed that his entire background in English was just one TOEFL cram course that lasted five months. He had an astounding TOEFL score, but his actual English knowledge was approximately low intermediate. The advantage this man had was that he was aware of his predicament and was then trying to actually learn English. Some test-takers don’t understand this, and they think that since they scored high on the TOEFL their English must be good. Then they get upset when the college won’t allow them to take regular classes.