 | The examples and perspective in this article may not represent a worldwide view of the subject.(August 2015) |
Class size refers to the number of students a teacher faces during a given period of instruction. [1]
| The examples and perspective in this article may not represent a worldwide view of the subject.(August 2015) |
Class size refers to the number of students a teacher faces during a given period of instruction. [1]
Some researchers and policymakers have studied the effects of class size by using student-teacher ratio (or its inverse, teacher-student ratio), but class size is not accurately captured by this metric. As Michael Boozer and Cecilia Rouse explain in "Intraschool Variation in Class Size: Patterns and Implications", student-teacher ratio gives an imprecise view of class size because teachers may be unevenly distributed across classrooms. [2] Some teachers have light course loads as they are assigned to spend most or all of their time coaching other teachers. These coaches would nevertheless factor into the calculation of student-teacher ratio. In other classes – say, an inclusion class with special education students – two teachers may jointly teach a class of thirty-four students. Although student-teacher ratio would describe this class' size as seventeen, these teachers continue to face thirty-four students during instruction. In general, average class size will be larger than student-teacher ratio anytime a school assigns more than one teacher to some classrooms. [2] In poor and urban districts, where schools enroll higher numbers of students needing specialized instruction, student-teacher ratios will therefore be especially imprecise measures of class size. [3]
Although student-teacher ratio does not measure class size, some important studies and surveys have used student-teacher ratio as a proxy for class size. Indeed, some critics of class size reduction, including Malcolm Gladwell's David and Goliath, cite a 1986 study by Eric Hanushek, "The Economics of Schooling: Production and Efficiency in Public Schools", that relies on a literature review of data on student-teacher ratio instead of class size. [4] See Class-size reduction for a full discussion of Hanushek's thesis.
Educators have noted the benefits of class size since classical times.
Isocrates opened an academy of rhetoric in Athens around 392 B.C.E to train Athenian generals and statesmen, and he insisted on enrolling no more than six or eight students in his school at a time. [5] Edward J. Power explains that Isocrates admitted "only a few students to his classes because of his extraordinary concern for care." Quintilian, a rhetorician writing in the Roman Empire around 100 CE, cited the practices in Isocrates' school as evidence that a caring education required small class sizes. Quintilian argued in Institutes of Oratory, as Edward Power summarizes the book's thesis, that "care had nothing whatever to do with discipline: it meant simply that only a few students at a time could be taught effectively." [5]
The twelfth century rabbinic scholar Maimonides recognized that class size was correlated with student achievement. He wrote: "Twenty-five children may be put in charge of one teacher. If the number in the class exceeds twenty- five but is not more than forty, he should have an assistant to help with the instruction. If there are more than forty, two teachers must be appointed.'' [6]
Erasmus, the Dutch Humanist, wrote in his 1529 study of education De Pueris Instituendis about the advantages of private tutoring over ecclesiastic and public schools, where he believed classes had grown too large. He explained that "his standard of efficiency demanded a small school conducted by brilliant scholars…" Erasmus recognized that most parents would nevertheless have to settle for large class sizes because of the financial costs of such tutoring. [7]
At the turn of the 20th century, the philosopher and educational theorist John Dewey explained that in his ideal school, class sizes should be very small. "For the purposes of convenience, the children are divided into small groups of eight to twelve according to the kind of work and the age of the children. It is expected that the teacher will give attention to the specific powers and deficiencies of each child, so that the individual capacities will be brought out, and individual limitations made good." [8]
Around World War I, classes of 50 or more students were common in New York city, but dropping since that time. In 1930, the average class size in elementary schools was around 38 students, with classes for handicapped students averaging about 25 while other classes in the same building might be well over 45. This is set in contrast to some teachers in the 1890s facing 75 students daily. By the 1930s there was a public commitment to provide better individual attention to each student. Harold Campbell, the superintendent of New York city Board of Education at that time, opined that the ideal size of classes for normal students should be about 30 students. [9]
The author Kurt Vonnegut was a passionate advocate for class size reduction: "… we have some of the worst schools in the world…. The classes are too big. My definition of a utopia is very simple: classes of 15 or smaller – out of this, a great nation can be built. Classes have 35 students, for Christ's sake. The class ideally should be a family. Let's take care of each other. There's a person who can't get the hang of calculus? Someone should say, "Here, let me show you." A class of 35? Poor teacher." Likewise, in a 2006 interview with NPR before his death in 2007, Vonnegut was asked: "If you were to build or envision a country that you could consider yourself to be a proud citizen of, what would be three of its basic attributes"? Vonnegut responded: "Just one: great public schools with classes of 12 or smaller." Interviewer: "That's it?" Vonnegut: "Yeah….Just do this." [10]
Frank McCourt, a teacher in New York City public schools for thirty years and a Pulitzer Prize winner, also stressed the importance of smaller class size. In response to a radio interview question about what he would do first if he were named Schools Chancellor, McCourt answer that he would "cut the school day and certainly cut the size of the class because they're monstrous." [11]
36 states in the USA have adopted provisions to require class size reduction. These laws may set caps on individual class sizes, on school-wide student-teacher ratio, or class size averages in one or more grades. Several states have relaxed those requirements since 2008. Florida's class size cap was established over the course of several years, in response to a statewide referendum in 2002 that amended its state constitution. Statewide, class size averages are 15.46 students per class in grades preK-3, 17.75 in grades 4–8, and 19.01 in high school. Some cities regulate class size as well. San Diego, New York, and Boston include class size caps in their contracts with teachers unions. [12]
In a 2013 survey, OECD reports the average class size of its member countries at 24.1 The complete results of this study are below. Note that class size averages in this study are based on reports from lower secondary school (middle school) teachers about a class they choose at random to describe. The study did not comprehensively survey school enrollment, which is why the United States' class size average appears differently here than in the previous chart. [13]
| Country | Average Class Size |
|---|---|
| Flanders (Belgium) | 17.3 |
| Estonia | 17.3 |
| Latvia | 17.7 |
| Finland | 17.8 |
| Slovak Republic | 19.1 |
| Iceland | 19.6 |
| Croatia | 20.0 |
| Cyprus | 20.7 |
| Czech Republic | 21.1 |
| Denmark | 21.2 |
| Poland | 21.4 |
| Sweden | 21.4 |
| Bulgaria | 21.7 |
| Italy | 21.8 |
| Serbia | 21.9 |
| Norway | 22.5 |
| Portugal | 22.6 |
| Spain | 23.6 |
| England (United Kingdom) | 23.9 |
| Average | 24.1 |
| Australia | 24.7 |
| Abu Dhabi (United Arab Emirates) | 25.1 |
| Netherlands | 25.4 |
| France | 25.5 |
| Canada | 25.8 |
| United States | 27.0 |
| Israel | 27.6 |
| Brazil | 30.8 |
| Japan | 31.2 |
| Chile | 31.8 |
| Malaysia | 32.1 |
| Korea | 32.4 |
| Mexico | 33.0 |
| Singapore | 35.5 |
National class size estimates date back only to the late 1980s. Available historical data appears in the table below. [14] [15]
| Year | Elementary Class Size Average | Secondary Class Size Average |
|---|---|---|
| 2020-2021 | 19.1 | 17.2 |
| 2007-2008 | 20 | 23.4 |
| 2003-2004 | 20.4 | 24.7 |
| 1999-2000 | 21.1 | 23.6 |
| 1993-1994 | 24.1 | 23.6 |
Based on most recent data available from the National Center for Education Statistics. [15]
| Place | Average Elementary Class Size |
|---|---|
| United States | 19.1 |
| Alabama | 17.5 |
| Alaska | 16.6 |
| Arizona | 20.4 |
| Arkansas | 18.8 |
| California | 23.0 |
| Colorado | 18.8 |
| Connecticut | 18.0 |
| Delaware | 17.9 |
| District of Columbia | 15.8 |
| Florida | 17.9 |
| Georgia | 20.3 |
| Hawaii | 17.5 |
| Idaho | 21.2 |
| Illinois | 18.7 |
| Indiana | 21.3 |
| Iowa | 19.8 |
| Kansas | 17.9 |
| Kentucky | 19.8 |
| Louisiana | 18.3 |
| Maine | 14.2 |
| Maryland | 18.3 |
| Massachusetts | 16.7 |
| Michigan | 21.5 |
| Minnesota | 20.9 |
| Mississippi | 18.9 |
| Missouri | 18.2 |
| Montana | 18.1 |
| Nebraska | 18.9 |
| Nevada | 18.5 |
| New Hampshire | 16.0 |
| New Jersey | 16.9 |
| New Mexico | 17.6 |
| New York | 16.9 |
| North Carolina | 18.5 |
| North Dakota | 16.8 |
| Ohio | 19.2 |
| Oklahoma | 19.7 |
| Oregon | 21.0 |
| Pennsylvania | 18.4 |
| Rhode Island | 19.5 |
| South Carolina | 17.9 |
| South Dakota | 19.0 |
| Tennessee | 18.6 |
| Texas | 17.7 |
| Utah | 22.0 |
| Vermont | 14.9 |
| Virginia | 17.8 |
| Washington | 19.0 |
| West Virginia | 16.4 |
| Wisconsin | 18.2 |
| Wyoming | 16.1 |
Based on most recent data available from the National Center for Education Statistics. [15]
| Place | Average Secondary School Class Size |
|---|---|
| United States | 21.0 |
| Alabama | 20.1 |
| Alaska | 15.4 |
| Arizona | 22.6 |
| Arkansas | 17.2 |
| California | 27.1 |
| Colorado | 22.4 |
| Connecticut | 18.6 |
| Delaware | 21.6 |
| District of Columbia | 19.1 |
| Florida | 23.4 |
| Georgia | 22.4 |
| Hawaii | 20.1 |
| Idaho | 20.5 |
| Illinois | 21.1 |
| Indiana | 19.6 |
| Iowa | 19.5 |
| Kansas | 17.4 |
| Kentucky | 20.0 |
| Louisiana | 20.9 |
| Maine | 13.4 |
| Maryland | 22.0 |
| Massachusetts | 17.4 |
| Michigan | 23.4 |
| Minnesota | 23.6 |
| Mississippi | 17.9 |
| Missouri | 19.2 |
| Montana | 16.2 |
| Nebraska | 16.8 |
| Nevada | 27.6 |
| New Hampshire | 16.8 |
| New Jersey | 19.1 |
| New Mexico | 20.1 |
| New York | 19.6 |
| North Carolina | 20.4 |
| North Dakota | 15.8 |
| Ohio | 18.6 |
| Oklahoma | 16.7 |
| Oregon | 22.6 |
| Pennsylvania | 19.4 |
| Rhode Island | 20.5 |
| South Carolina | 20.1 |
| South Dakota | 19.7 |
| Tennessee | 19.9 |
| Texas | 20.1 |
| Utah | 22.1 |
| Vermont | 15.4 |
| Virginia | 20.9 |
| Washington | 22.2 |
| West Virginia | 17.7 |
| Wisconsin | 22.2 |
| Wyoming | 16.1 |
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