The government already has a programme in place to create 600 more classrooms in infant schools catering for children aged between four and seven.
The extra money is intended to reduce the number of classes with more than 30 pupils from 485 000 in January to fewer than 200 000 by September.
Prefabricated building companies specialising in school classrooms, particularly Portakabin and Elliott Group, are likely to do well out of the government initiative.
Portakabin is about to launch a volumetric steel-framed classroom named Akademy that has been purpose designed by Cottrell and Vermeulen Architecture.
However, as mobile classrooms are not eligible for grant aid, Elliott clads the timber-framed modules in brick and adds pitched roofs.
Completed classrooms can be delivered in 10 to 12 weeks of receiving an order, claims Elliott.
