I know that open is an ergative verb and it can be used transitively and intransitively and open is also an adjective.
The school opens at 10 A.M and closes at 5 P.M.
The school is opened at 10 A.M and is closed at 5 P.M.
The school is open from 10 A.M to 5 P.M.
I think all the sentences are possible and grammatical.If they are wrong, why are they wrong?
I would like to know if any one of these sentences is wrong or is there any difference among them?