Classes are small enough that teachers can work with children individually and in small groups.
Classes are large and unwieldy, and teachers spend a lot of time disciplining the children. or Class size is reasonable, but teachers still spend most of their time addressing the children as a whole group. The school environment is safe and comfortable, with enough space that children do not feel crowded. The building grounds are cheerful and child-friendly. The school is overcrowded. A flexible arrangement of tables or desks enables children to work alone or in small groups.