The headmaster of the Josef Koenig High School in Haltern said the whole school has been plunged into grief at the death of 16 of their students and two of their teachers.
Speaking to ITV News Correspondent Neil Connery, Ulrich Wessel said all of those who died had their whole lives in front of them, and the immense tragedy was being shared by the whole community.
During a visit to the crash site, the boss of Lufthansa has avoided reporters' questions about the co-pilot's known depression.
Newly-released footage shows Germanwings co-pilot Andreas Lubitz in flight around ten years ago during his time as a trainee.
Pilots with a history of depression should not be banned from flying, a leading British psychiatrist has said.