Each school must be divided into work units. The pupils within each work unit are divided into classes and also, for their everyday work, into groups of various sizes.

The work unit need not comprise classes from the   grade. A unit can, for example, be formed comprising pupils from grades I, 2 and 3. The work unit may also comprise classes from different levels.

An arrangement of this kind can often present great advantages. Senior pupils can help junior pupils.

Work units must be more than an administrative division. The aim is for them to be developed into a small school within the framework of the large one.

They must be conducive to close co-operation between staff and pupils.

Essential goals of school work are more easily attained if certain duties within school management districts are delegated to the work units. Duties of this kind include the following.