I believe that a teacher who is not the child's academic teacher should be the housemaster orhousemistress.
From the
Hansard archive
Example from the Hansard archive. Contains Parliamentary information licensed under theOpen Parliament Licence v3.0
Each house is run by ahousemistressand several resident staff (matrons).
From
Wikipedia
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Ahousemistressfor each year and full-time residential staff reside on campus.
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Wikipedia
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Each house is supervised by ahousemistressand a boarding assistant.
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Wikipedia
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Boarding houses were staffed by ahousemistressand a reliefhousemistresswho would provide cover during the main housemistress's 24 hour period off each week.
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Wikipedia
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Houses are also often referred to by the original name of the building or by the name or initials of the teacher in charge of the house (housemistressor housemaster).
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Wikipedia
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