This section is from the book "Modern Buildings, Their Planning, Construction And Equipment Vol3", by G. A. T. Middleton. Also available from Amazon: Modern Buildings.
Accommodation in any school - i.e. number of places for which it is finally recognised - depends in part on arrangement of desks, which must be approved by the Board of Education. The central hall, corridor, and classrooms for cookery, laundry, handicrafts, drawing, or science are counted toward accommodation. When a building is for use of older scholars, plans of school and classrooms must show average of not less than 10 feet square of floor space for each place provided.
Infants' Schools Infants should not, except in very small schools, be taught in same room with older children. Access to infants' room should never be through a senior schoolroom.
Partitions between infants' and any other rooms should be impervious to sound, and there should be no means of communication other than an ordinary door. Both school and playground should always be on ground floor. No classroom should, as a rule, accommodate more than 60. Space in which children can march and exercise should be provided. Corridors for this purpose should not be less than 12 feet wide.
A Babies' Room, where provided, should always have an open fireplace.
An allowance of 16 inches per child at long desks is sufficient, or dual desks 3 feet long. When a building is wholly for the use of infants, plans must show an average of not less than 9 square feet for each place provided. If an Infants' Room be attached to a school for older children with no corridor or hall provided, the classroom should have a larger floor space than 9 square feet per child. Provision should be made for sufficient space free of desks for exercise, and it should extend across the room for a width of not less than 12 feet.