she is admitted to the hospital.. Grammar is correct here?

Sometimes you might also use "into" or "onto" with it. "He was admitted into the school's science program. He is now in the science program." "She was admitted onto the board of governors. She is now on the board of governors." (a 'board of governors' is so called after the table around which the meetings take place. It is conventional, therefore, to say that someone is 'on the board', although they really sit round the table or at the table!) "The doors were locked but she rang the bell and was admitted into the hospital." ("into" is used here to indicate the action of going in to a building.)

I have learned something from your post, I was confused about it just now, too. Thanks for sharing, have a nice day.

@owlwings So is it correct to say she is agreed to the agreement ..here agreed refers an action or she agrees with the agreement