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A portable classroom (also known as a demountable or relocatable classroom), is a type of portable building installed at a school to temporarily and quickly provide additional classroom space where there is a shortage of capacity.[1] They are designed so they may be removed once the capacity situation abates, whether by a permanent addition to the school, another school being opened in the area, or a reduction in student population.[1] Such buildings would be installed much like a mobile home, with utilities often being attached to a main building to provide light and heat for the room. Portable classrooms may also be used if permanent classrooms are uninhabitable, such as after a fire or during a major refurbishment.
Sometimes, the portable classrooms are meant to be long-lasting and are built as a "portapack", which combines a series of portables and connects them with a hallway.[citation needed]
Portable classrooms are colloquially known as bungalows, slum classes, t-shacks, trailers, terrapins, huts, t-buildings, portables, mobiles, or relocatables. In the UK, those built in 1945–1950 were known as HORSA huts after the name of the Government's post-war building programme, "Hutting Operation for the Raising of the School-leaving Age".[2][3] Others in the UK are often known as 'Pratten huts' after the Pratten company that supplied many of them after World War II.[4][5][6][7]
