How Important Is Class Size?
Why Does Reducing Class Size in the Early Grades Have a Positive Effect?
Education researchers suspect that class size reduction in the early grades helps students to achieve because there is a greater opportunity for individual interaction between student and teacher in a small class. Teachers generally have better morale in a small class, too, and are less likely to feel overwhelmed by having a variety of students with different backgrounds and achievement levels. As a result, they are more likely to provide a supportive environment. One researcher, Frederick Mosteller notes "Reducing [the size of classes in the early grades] reduces the distractions in the room and gives the teacher more time to devote to each child."
In the early grades, students are just beginning to learn about the rules of the classroom, and they are figuring out if they can cope with the expectations of education. If they have more opportunity to interact with their teacher, they are more apt to feel like they can cope.
This theory would also explain why lowering class size in the upper grades may not have the same affect on achievement. Students in the upper grades, who may not have had the benefits of a small class in the early years, have already formed their habits, good and bad, for coping with their classroom environment. Simply reducing the class size at this level may not be enough to change their ways.
The Movement to Reduce Class Sizes in Public Schools
In recent years there has been a movement across the country to reduce class size in public schools. In the late 1990s when state coffers were full, it was politically popular to cut class sizes across the board in the lower grades as a way of pointing dollars toward education in a way that would please voters. Currently, well over half the states have class-size reduction programs for their public schools.
The federal government jumped on the bandwagon in 1998 with a federal class-size reduction initiative. From 1999-2000, the federal government's $2.6 billion appropriation enabled states and school districts to hire more teachers and reduce class sizes.
Reducing class size is an appealing and visible way for states and public schools to show that they are improving the quality of education. Because smaller classes allow teachers to devote more time to instruction and less to classroom management, smaller classes are popular with teachers unions and administrators. Many studies have shown an increase in student achievement, fewer discipline problems and improvement in teacher morale and retention as a result of class size reduction. But many researchers question whether the costs outweigh the benefits.
Unintended Consequences
In addition to high costs, reducing class size can have unintended consequences. When California reduced class size in 1996, the state found that it did not have enough veteran teachers or classrooms to meet the challenge. Schools were forced to hire new teachers and add portable classrooms to accommodate the state mandate. Schools faced a dilemma: Was it really better to have smaller classes with an inexperienced teacher or larger classes with experienced teachers?
Voters in the state of Florida approved a class-size reduction amendment in 2002 that requires classes to have no more than 18 students in pre-kindergarten through third-grade classes, no more than 22 in fourth- to eighth-grade classes and no more than 25 in high school classes. This required reduction will be phased in and must be in place by 2010. The state Board of Education estimates that Florida will need to spend $2 billion to build enough classrooms to meet the demands of the amendment.

