„Teachers in larger classes use less intensive teaching methods (assign more responsibility for learning to the students), probably implying more frontal teaching and less personalized instruction. […] An increase in class size, by construction, implies less direct pupil/teacher interaction. Consistent with this, teachers think that pupils have to take greater responsibility for their learning when class size increases.“
Univ.-Prof. Dr. Peter Fredriksson u.a., „Parental responses to public investments in children: Evidence from a maximum class size rule“ (2016), S. 30