The only student at her school to walk out

[5jj]

B: She's not in school at the moment.

The first interpretation of this I think would be that she's not enrolled at any school.

I don't think I would use sentence B with that meaning. I am not sure how I would refer to any person under school-leaving age who was not going to school.

 

[emsr2d2]

I don't think I'd use sentence B at all. If I wanted to say that she's not enrolled at any school, I'd say "She doesn't go to school at the moment". I'd expect to have to clarify that statement with something like "She's really sick" or "She's being home-schooled".

 

[Tdol]

Not to mention the ones who slip through the cracks.