Two of the major countries of North America (Canada and the United States) have both been profoundly influenced by England. Although English fashions were important in both countries, the idea of school uniform was nasically the 19th century English concept as appropriate for affluenet children attending exclusuve public schools. Public school children have not traditionally worn uniforms. They were, however, adopted in the parochial (Catholic schools) and Americans in particular begun rethinking the idea of school uniforms in the 1980s. Quite a number of schools have begun to adopt voluntary uniforms.

Canada

Most public schools in Canada do not require that students wear uniforms, but most include rules against indecent or offensive clothing. Many regions of Canada have publicly-funded Catholic schools, and many of those schools have uniforms. In recent years, some schools have eliminated skirts and kilts, in favour of dress pants for girls, or replaced skirts with the x-kilt, a garment that looks like a kilt from the outside, but has an attached shorts on the inside for modesty. Also, bicycle shorts are sometimes worn under skirts. The tops are either dress shirts or golf shirts, and either sweaters or sweatshirts are worn. Grey or khaki dress pants are worn by both boys and girls.

United States

Most public schools in the United States do not require uniforms, though many have dress codes regulating student attire. Dress codes usually include limits on skirt length and skin exposure. They generally include prohibitions on clothing with tears or holes, exposure of undergarments, and anything that is obscene, gang-related, or unsafe. [2] Some school dress codes specify the types of tops (e.g. collared) and bottoms (e.g. khaki) that are allowed, as well as specific colors (often the school colors). In recent years there has been a significant increase in school uniforms (see below) for all levels of schooling. According to the National Association of Elementary School Principals (NAESP), the fraction of American public schools requiring school uniforms rose from three percent in 1997 to one in five (21%) in 2000.

School uniforms are fairly common for private schools in the United States, especially for Catholic schools. Although many private school uniforms are similar to the ones described below for public schools, a few still require more formal British-style school uniforms, such as blazers and ties. Culottes are also sometimes substituted for a skirt, especially at Episcopalian or non-parochial private schools.

In 1994, the Long Beach Unified School District, in Southern California, required school uniforms in all elementary and middle schools. This began a trend for uniforms in American elementary public schools, especially in urban school districts. President Clinton mentioned LBUSD's efforts in his 1996 State of the Union Address. The adoption of school or district-wide uniform policies (or, alternatively, "standardized dress codes" – which are not as rigid as school uniform requirements, but allow some leeway within set parameters) has been motivated by a need to counter "gang clothing" (or, in the alternative, the pressure for families to purchase upscale-label clothing to avoid their children being ignored by "fashion cliques"), as well as improve morale and school discipline.It is illegal for school systems to force students to wear school uniforms.Students and parents argue that uniforms violate freedom of expression.

In Puerto Rico, the Department of Education requires all students to wear their school uniform, and only allows for medical exemptions [[3]]. Also, almost all private schools also require their student to wear the school uniform.