Educational stage
Educational stages are subdivisions of formal learning, typically covering early childhood education, primary education, secondary education and tertiary education. The United Nations Educational, Scientific and Cultural Organization recognizes nine levels of education in its International Standard Classification of Education system through Level 8 ). UNESCO's International Bureau of Education maintains a database of country-specific education systems and their stages. Some countries divide levels of study into grades or forms for school children in the same year.
Organization
during childhood and early adulthood is typically provided through either a two- or three-stage system of childhood school, followed by additional stages of higher education or vocational education for those who continue their formal education:- Early childhood education at preschool, nursery school, or kindergarten
- Primary education at primary school or elementary school, and sometimes in the early years of middle school
- Secondary education at secondary school or high school, and sometimes in the later years of middle school
- Higher education or vocational education
| Age | Educational stage | 2-stage system | 3-stage system | ISCED |
| 4–5 | Early childhood education | Preschool | Preschool | 0 |
| 5–6 | Early childhood education | Preschool | Preschool | 0 |
| 6–7 | Primary education | Primary school | Elementary school | 1 |
| 7–8 | Primary education | Primary school | Elementary school | 1 |
| 8–9 | Primary education | Primary school | Elementary school | 1 |
| 9–10 | Primary education | Primary school | Elementary school | 1 |
| 10–11 | Primary education | Primary school | Elementary school | 1 |
| 11–12 | Primary education | Primary school | Middle school | 2 |
| 12–13 | Primary education | Primary school | Middle school | 2 |
| 13–14 | Secondary education | Secondary school | Middle school | 2 |
| 14–15 | Secondary education | Secondary school | Middle school | 2 |
| 15–16 | Secondary education | Secondary school | Middle school | 2 |
| 16–17 | Secondary education | Secondary school | Middle school | 2 |
| 17–18 | Secondary education | Secondary school | High school | 3 |
| - | Secondary education | Secondary school | High school | 3 |
For additional ISCED stages of education, see ISCED.
Sudbury schools do not use formal grade levels or educational stages. Instead, students ages 4 through 18 are intermingled in a democratic educational system, relying on a series of certifications to use equipment that may require specialized knowledge or safety procedures. These certifications are not typically restricted by age, but rather by demonstrated ability.
By country
Australia
In Australia, children undergo thirteen years of formal education, usually starting at age 4, 5 or 6, and finishing at age 17, 18 or 19. The years are numbered from "Kindergarten" to 12.Australian Capital Territory
In the Australian Capital Territory, primary school is Kindergarten/years 1–6, high school is years 7–9, and college or Senior Secondary is years 10, 11 & 12.| Year | Ages | School |
| Preschool | 3–5 | Preschool |
| Kindergarten | 5–6 | Primary |
| Grade or Year 1 | 6–7 | Primary |
| Grade or Year 2 | 7–8 | Primary |
| Grade or Year 3 | 8–9 | Primary |
| Grade or Year 4 | 9–10 | Primary |
| Grade or Year 5 | 10–11 | Primary |
| Grade or Year 6 | 11–12 | Primary |
| Grade or Year 7 | 12–13 | Secondary |
| Grade or Year 8 | 13–14 | Secondary |
| Grade or Year 9 | 14–15 | Secondary |
| Grade or Year 10 | 15–16 | College or Senior Secondary |
| Grade or Year 11 | 16–17 | College or Senior Secondary |
| Grade or Year 12 | 17–18 | College or Senior Secondary |
Northern Territory
In the Northern Territory, primary school is Transition/years 1–6, middle school is years 7–9, and high school or Senior Secondary is years 10–12.| Year | Ages | School |
| Kindergarten | 3–5 | Preschool |
| Transition | 5–6 | Primary |
| Grade or Year 1 | 6–7 | Primary |
| Grade or Year 2 | 7–8 | Primary |
| Grade or Year 3 | 8–9 | Primary |
| Grade or Year 4 | 9–10 | Primary |
| Grade or Year 5 | 10–11 | Primary |
| Grade or Year 6 | 11–12 | Primary |
| Grade or Year 7 | 12–13 | Secondary |
| Grade or Year 8 | 13–14 | Secondary |
| Grade or Year 9 | 14–15 | Secondary |
| Grade or Year 10 | 15–16 | Senior Secondary |
| Grade or Year 11 | 16–17 | Senior Secondary |
| Grade or Year 12 | 17–18 | Senior Secondary |
Azerbaijan
| Azerbaijan Grade | Ages | Correspondent in the U.S |
| P1 | 3–4 | Preschool |
| P2 | 4–5 | Pre-kindergarten |
| Azerbaijan Grade | Ages | Correspondent in the U.S |
| P3 | 5–6 | Kindergarten |
| P4 | 6–7 | First grade |
| P5 | 7–8 | Second grade |
| P6 | 8–9 | Third grade |
| P7 | 9–10 | Fourth grade |
| P8 | 10–11 | Fifth grade |
| Azerbaijan Grade | Ages | Correspondent in the U.S |
| M1 | 11–12 | Sixth grade |
| M2 | 12–13 | Seventh grade |
| M3 | 13–14 | Eighth grade |
| Azerbaijan Grade | Ages | Correspondent in the U.S |
| M4 | 14–15 | Ninth grade/Freshmen |
| M5 | 15–16 | Tenth grade/Sophomore |
| DP1 | 16–17 | Eleventh grade/Junior |
| DP2 | 17–18 | Twelfth grade/Senior |
Belarus
In Belarus, education is guaranteed for everyone. Primary school lasts for 4 years, but some psycho-physically challenged children study for 5 years according to a special standard. Forms 1 to 9 are considered compulsory. After completing general basic school a person can study in a special establishment to get a job. To enter a higher educational establishment a person must complete general secondary school and pass three centralized tests.| Year | Ages | School |
| Ясли | 1–2 | Early |
| Детский сад | 3–6 | Early |
| Form 1 | 6–7 | Primary |
| Form 2 | 7–8 | Primary |
| Form 3 | 8–9 | Primary |
| Form 4 | 9–10 | Primary |
| Form 5 | 10–11 | General basic |
| Form 6 | 11–12 | General basic |
| Form 7 | 12–13 | General basic |
| Form 8 | 13–14 | General basic |
| Form 9 | 14–15 | General basic |
| Form 10 | 15–16 | General secondary |
| Form 11 | 16–17 | General secondary |
Brazil
In Brazil, there are three levels of basic education: "Educação Infantil", "Ensino Fundamental" and "Ensino Médio", which are generally completed by age eighteen. Basic education is designed to provide the necessary minimum knowledge for the exercise of citizenship. It also serves to develop consciousness for choosing future professions. In Brazil, after the name of the grade one may use the names "série" or "ano". The educational stages in Brazil are divided as follows:| Escola Infantil | Ages | Correspondent in the U.S |
| Berçário | 0–1 | Nursery 1 |
| Pré-maternal/Creche | 1–2 | Nursery 2 |
| Maternal/Creche | 2–3 | Nursery 3 |
| 1o período | 3–4 | Kindergarten 1 |
| 2o período | 4–5 | Kindergarten 2 |
| 3o período | 5–6 | Kindergarten 3 |
| Ensino Fundamental | Ages | Correspondent in the U.S |
| 1o ano | 6–7 | first grade |
| 2o ano | 7–8 | second grade |
| 3o ano | 8–9 | third grade |
| 4o ano | 9–10 | fourth grade |
| 5o ano | 10–11 | fifth grade |
| 6o ano | 11–12 | sixth grade |
| 7o ano | 12–13 | seventh grade |
| 8o ano | 13–14 | eighth grade |
| 9o ano | 14–15 | ninth grade |
| Ensino Médio | Ages | Correspondent in the U.S |
| 1a série | 15–16 | tenth grade |
| 2a série | 16–17 | eleventh grade |
| 3a série | 17–18 | twelfth grade |