On the brink of insanity:
Virgo, Scorpio, Sagittarius

Wings it/Guesses most of it:
Leo, Aries

Breaks down crying /Anxiety attack during the exam:
Cancer, Pisces

Leaves the exam room first chance they get:
Taurus, Gemini,

Hasn't come out their room all week except for the exam:
Capricorn, Aquarius

No one really knows what they do:
Libra