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In China, before college, each class has a teacher who in charge , can I call it the head teacher?? Or head master? And after college, each class has a person who manages several classes daily routine but does not do the teach..what do you call it? For example, if my math flunked, I can ask him\her for help but I can't possibly ask the college professors for help. And if my PC were stolen, I should also ask him for help. What do you call it? A teacher?? But he doesn't teach
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Does class in your country have this teacher? In China, we have.

1.before college, each class has a teacher who in charge , he/she's a teacher who teaches one of the main subjects and who manages the daily routine as well. So if you were caught cheating, it's him/her who implements the punishment. He/she is only in charge of one class. What do you call it? Can I call it the head teacher?? Or head master?

2.after college, each class has a person who manages several classes daily routine but does not do the teach..what do you call it? For example, if my math flunked, I could ask him\her for help but I couldn't possibly ask the college professors for help. And if my PC were stolen, I should also ask him for help. What do you call it? A teacher?? But he doesn't teach.
In the US, we don't usually have multiple teachers for a class. There's the teacher, then maybe a co-teacher, a student-teacher, or teaching assistants. A headmaster would be like a principal in a British boarding school.

In college, the professor may have one or more TAs (teaching assistants) that instruct "sections".
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Do you call it principle or headmaster?
VorparA headmaster would be like a principal in a British boarding school.
Vorpar. A headmaster would be like a principal in a British boarding school.
Most British boarding schools have a Headmaster/Headmistress/Headteacher.
Spelling - principal
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VorparA headmaster would be like a principal in a British boarding school.
In the UK, headmasters are not limited to boarding schools. They are in schools in general. The word just means a male headteacher http://dictionary.cambridge.org/dictionary/british/headmaster

The terminology for such a teacher in general, regardless of their gender or the type of school that they are in charge of, is headteacher http://dictionary.cambridge.org/dictionary/british/headteacher

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