>Obie formy "in a school" i "in school" sa poprawne.
You don't know what you are talking about.
They mean different things.
>Na angielskich
>forach mozna przeczytac:
> "I work in a school and would like to arrange for the Trading
>Standards Service to provide citizenship/consumer affairs learning
>opportunities for ..."
Which is fine.
>
>"As you know, I work in a school and I get 27 days a year holiday".
Yup, he is a teacher. He works in a school.
>
>"I work in a school. Does my maternity leave and pay stop during
>school holidays and then re-start when school re-opens? ..."
Again, he works in a school. He is there to teach, not to learn.
He knows what he does there. You don't.