Organization for Economic Co-operation and Development (OECD)
The OECD is an intergovernmental organization of 34 industrialized countries that serves as a forum for member countries to cooperate in research and policy development on social and economic topics of common interest. These 34 member countries are included in indicator 25: Australia, Austria, Belgium, Canada, Chile, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Israel, Italy, Japan, Korea, Luxembourg, Mexico, Netherlands, New Zealand, Norway, Poland, Portugal, Slovak Republic, Slovenia, Spain, Sweden, Switzerland, Turkey, United Kingdom, and United States. Currently, 25 nonmembers participate as regular observers or full participants in OECD Committees; two of these partner countries, Brazil and the Russian Federation, are included in indicator 25.
International Standard Classification of Education (ISCED)
Indicators 25 and 38 uses the 1997 International Standard Classification of Education (ISCED) to compare educational systems in different countries. ISCED is the standard used by many countries to report education statistics to UNESCO and the Organization for Economic Co-operation and Development (OECD). ISCED divides educational systems into the following seven categories, based on six levels of education.
ISCED Level 0: Education preceding the first level (early childhood education) usually begins at age 3, 4, or 5 (sometimes earlier) and lasts from 1 to 3 years, when it is provided. In the United States, this level includes nursery school and kindergarten.
ISCED Level 1: Education at the first level (primary or elementary education) usually begins at age 5, 6, or 7 and continues for about 4 to 6 years. For the United States, the first level starts with 1st grade and ends with 6th grade.
ISCED Level 2: Education at the second level (lower secondary education) typically begins at about age 11 or 12 and continues for about 2 to 6 years. For the United States, the second level starts with 7th grade and typically ends with 9th grade. Education at the lower secondary level continues the basic programs of the first level, although teaching is typically more subject focused, often using more specialized teachers who conduct classes in their field of specialization. The main criterion for distinguishing lower secondary education from primary education is whether programs begin to be organized in a more subject-oriented pattern, using more specialized teachers conducting classes in their field of specialization. If there is no clear breakpoint for this organizational change, the lower secondary education is considered to begin at the end of 6 years of primary education. In countries with no clear division between lower secondary and upper secondary education, and where lower secondary education lasts for more than 3 years, only the first 3 years following primary education are counted as lower secondary education.
ISCED Level 3: Education at the third level (upper secondary education) typically begins at ages 15 or 16 and lasts for approximately 3 years. In the United States, the third level starts with 10th grade and ends with 12th grade. Upper secondary education is the final stage of secondary education in most OECD countries. Instruction is often organized along subject-matter lines, in contrast to the lower secondary level, and teachers typically must have a higher level, or more subject-specific, qualification. There are substantial differences in the typical duration of programs both across and between countries, ranging from 2 to 5 years of schooling. The main criteria for classifications are (1) national boundaries between lower and upper secondary education and (2) admission into educational programs, which usually requires the completion of lower secondary education or a combination of basic education and life experience that demonstrates the ability to handle the subject matter in upper secondary schools.
ISCED Level 4: Education at the fourth level (postsecondary nontertiary education) straddles the boundary between secondary and postsecondary education. This program of study, which is primarily vocational in nature, is generally taken after the completion of secondary school, typically lasts from 6 months to 2 years. Although the content of these programs may not be significantly more advanced than upper secondary programs, these programs serve to broaden the knowledge of participants who have already gained an upper secondary qualification. This level of education is not included in the analysis for Indicator 25, but is included for select countries in indicator 38.
ISCED Level 5: Education at the fifth level (first stage of tertiary education) includes programs with more advanced content than those offered at the two previous levels. Entry into programs at the fifth level normally requires successful completion of either of the two previous levels. Indicator 25 makes a distinction between two types of tertiary education.
ISCED Level 6: Education at the sixth level (advanced research qualification) is provided in graduate and professional schools that generally require a university degree or diploma as a minimum condition for admission. Programs at this level lead to the award of an advanced, postgraduate degree, such as a Ph.D. The theoretical duration of these programs is 3 years of full-time enrollment in most countries (for a cumulative total of at least 7 years at levels five and six), although the length of actual enrollment is often longer. Programs at this level are devoted to advanced study and original research.
High school attainment data presented in indicator 25 refer to ISCED level 3 degrees. ISCED level 3 corresponds to high school completion in the United States. ISCED level 3C short programs do not correspond to high school completion; these short programs are excluded from indicator 25. Bachelor's degree or higher data presented in indicator 25 refer to ISCED level 5A or 6 degrees. ISCED level 5A, first award, corresponds to the bachelor's degree in the United States; ISCED level 5A, second award, corresponds to master's and first-professional degrees in the United States; and ISCED level 6 corresponds to doctoral degrees in the United States.