Nr 1 ... The blue cast bothers me a bit, and I agree with the half-bike comments. The building roof going outside the picture doesn't bother me, it in fact creates a feeling of grandeur (The building is TOO BIG for the frame, thus it implies that School is bigger than life). It is a very good photo regardless.
Nr 2 ... Is that a TV screen below the building? This and the highlights spoil the picture more than the soft focus! In fact I think the focus is fine, at least at this resolution, and clearly based on the time people had to move this was not hand held. The picture however doesn't appear to relate to the subject. This too is a very well executed photo.
Nr 3 ... I also at first glance got the impression that the helmet was speared / dead. And the building doesn't look like a school to me, at least schools doesn't look like that over here, so again it seems to mis the subject, but ignoring the subject this not a bad photo!