The phrase "allowed to know about" is correct and usable in written English.
It can be used when discussing permissions regarding information or knowledge that someone may or may not have access to.
Example: "As an intern, I was not allowed to know about the company's confidential projects."
Alternatives: "permitted to be informed about" or "authorized to know about".
Despite its obviously louche tone, this letter was submitted to the judges in a "secret dossier," which Dreyfus and his lawyers were not allowed to know about, let alone see.
You know, classified stuff that regular Americans aren't allowed to know about, like programs where they get secretly spied on.
But consider what little we are allowed to know about police contempt for fundamental liberties.
And how much should the urban elite be allowed to know about how animals are transformed into meat?
Although Ashcroft, as attorney general, had been fully briefed about the program, many of his senior legal advisers were not allowed to know about it, officials said.
Now that we're "allowed" to know about G.M.O.s, there are some other questions about the food we buy that we might like answered.
"If you really want it to be a surprise, the circle of people that you're going to allow to know about it is going to be small, and that's just the nature of it," said Dan Bartlett, a former counselor to President Bush.
Until my four half-siblings sign up to the voluntary registry I am not allowed to know anything about them – no name, no basic information, no contact details, nothing.
They are not allowed to know anything about their opponents' tendencies or playing style.
Except you and I -- the funders of this project -- aren't allowed to know anything about it.
THE truth respecting China and the Chinese, according to a - Chinaman who considers he may be allowed to know as much about his country and its people as the more or less veracious travellers who have discoursed thereon.
