What do students call their teacher in class? [closed]

Well, years ago I was an English teacher in an English Teaching Institute. In the country I live, students call their teachers by saying "Mr. Teacher" or "Teacher" (literally translated) in schools. In places other than schools and universities, students also can call their teacher by saying "Mr. X", and in universities they call their professor by saying "Dr." and "Master". It was always question for me that in an English class what should I be called by my students because I didn't know what American students call their teacher in class.

To sum up my question, what do students call their teacher in class in a typical school in the U.S.? Is it different for the students of primary school and secondary school? I would be glad to hear the same question about England and Australia.

In the U.S. the variety of forms of address used is quite broad. I think that at the college level, the honorific Professor is most common, after which the honorific-plus-surname form Professor X (for example, Professor Johnson) is common, followed by the form Doctor X (for example, Doctor Johnson). In graduate school, many students address professors by their first names, particularly in seminars or less formal groups. When not present, professors most often are called by their surnames (for example, Johnson), and less frequently by first name or by honorific-plus-surname forms.

At the high school level, forms like Mr. X, Mrs. X, Ms X, and Miss X are common, where X is a surname. Both in class and out, popular teachers often are referred to by title plus first letter of surname; for example, a Mrs. Thompson might be called Mrs. T.

At the school I attended in England we called our teachers Sir. That may not have been mainstream and I doubt very much whether it’s in use in many schools today.

In UK state schools it's correct to call all male teachers Sir and all female teachers Miss (irrespective of marital status). In the third person you'd say Mr Smith, Mrs Jones, Miss Jones or Ms Jones as appropriate.

At the 16+ college where I teach it's common to refer to teachers by their first names, but that's definitely not universal. It takes students some time to lose the Sir/Miss habit of 12 years.

At the (UK) universities I've been involved with, staff were known (both in the second and third person) by their correct title, most often Dr Smith, but when correct, Professor Jones, but never just Doctor or Professor. In the UK only a select minority of academics attain the rank of professor. As a graduate student I began to refer to academic staff by their names eg Sarah Jones, but ended by calling my PhD supervisor by his first name.

In American grade schools, one addresses one’s teachers as Mr Smith or Ms Smith, or occasionally as Miss Smith or Mrs Smith, depending on personal preferences of the addressee.

At universities, TAs are addressed by their first names, while titled professors are traditionally addressed as Professor Smith or sometimes Dr Smith, depending again on the addressee’s personal preferences.

In all cases, if and when a student should come to be on closer personal terms with their instructor, the title may be dropped in favor of first names in casual conversation, especially outside of the classroom. This is more likely the older the student (and the closer the student’s age to the instructor’s age), and less likely with the younger the student and the more separated the two ages.