With smaller classes, teachers are much more able to

In smaller classes a teacher can do all three: identify learning problems, give individual attention, and adapt instruction to individual differences.

Identifying learning problems (A) becomes easier because the teacher can observe each learner closely.

Providing individual attention (B) is possible as the teacher-student ratio falls.

Adapting instruction to individual differences (C) is feasible when fewer learners allow differentiated pacing.

A small class size is treated as an important input to the quality of education.

A low teacher-pupil ratio eases individualized instruction and continuous evaluation.