In English 'going back to school' or 'coming back from school' sounds better to me.
To me, it's simply a question of perspective:
A parent, a casual observer, anyone not AT the school says 'the pupils are going back to school.'
A teacher, another pupil, anyone at the school says 'the pupils are coming back to school.'
Why is it going back? I think "going back" and "comming back" are two different things!? Going back sounds to me, that the pupils are on the first half of the track. (They started a few seconds/minutes ago) And comming back is on the second half near the school! (So, they will arive soon).
Does returning work,it should, as the meaning is the same or is there a different word for it?