The phrase "teacher of English" is correct and can be used in written English.
For example, "Mrs. Smith is an experienced teacher of English who loves to help her students grow."
She wanted to be a teacher of English literature.
Devoted high school teacher of English and reading.
The teacher of English Language and Literature was Isabel.
Dedicated teacher of English and Drama at Francis Lewis High School.
A teacher of English at the Arras lycée, Mollet joined the Socialist Party in 1921.
An exceptional teacher of English and writing at Irvington High School for 27 years.
In 1921, George Sampson famously said: "Every teacher in English is a teacher of English".
Her mother retired as a teacher of English at Ramapo High School in Franklin Lakes, N.J.
Gearin-Tosh, a teacher of English literature at Oxford University, refused to make haste.
She was a teacher of English and most recently a Gestalt psychotherapist.
As a highly qualified teacher of English at the high school level, I agree.
