Breakdown of O professor também está na escola.
o professor
the teacher (m)
também
also / too
estar
to be (temporary / location)
no
in the / on the / at the (m, f, pl forms: na, nos, nas)
Questions & Answers about O professor também está na escola.
Why do we use está here instead of é?
Why does the sentence say na escola instead of just em escola?
In Portuguese, we do not just say at school like in English. We say in the school. The word na is a contraction (mash-up) of the preposition em (in/on/at) and the feminine word for the, which is a. Because escola is feminine, em + a becomes na.
Could I put também at the end of the sentence?
If the teacher were a woman, what would change in this sentence?
The word for a female teacher is professora. Because she is female, you would also need to change the word for the at the very beginning from o to a, making it A professora também está na escola.