Teenager George Watson has been praised as a "hard working and popular" student by Derby College, where he was studying.
The 17-year-old from Whitaker Road, Littleover, died on Tuesday.
George, a former Littleover Community School student, is the second student from the school to die in two consecutive days - a 12-year-old pupil died on Monday.
George studied his A-Levels at Derby College's Joseph Wright Campus last year and returned this year as a part-time student on an evening English class - working towards re-taking his GCSE this summer.
A Derby College spokesperson said today: "We are all deeply shocked and saddened to hear of George's death. Our condolences and best wishes go to his family.
"George was an extremely hard working student and a popular member of the class."
