Editorial: A proposed new law would limit elementary school class sizes to a maximum of 20 students  Most parents support this measure and argue that making classes smaller allows teachers to devote more time to each student, with the result that students become more engaged in the learning process  However, researchers who conducted a recent study conclude from their results that this reasoning is questionable
The researchers studied schools that had undergone recent reductions in class size, and found that despite an increase in the amount of time teachers spent individually with students, the students' average grades were unchanged
The only schools appropriate for study are large elementary schools.