Coney Island Principal Greta Hawkins, who blocked her pre-K kids from singing patriotic songs at their June 19 moving-up ceremony has retaliated against teachers after her dictate made headlines.

Hawkins sent letters to three pre-K teachers warning that they face disciplinary charges of “insubordination and/or professional misconduct.”

She boasted that the city would do nothing to punish her.

“I have protection. It’s of a higher source.”