Portable classroom

[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.

[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.