School Ages Around the World — Starting Ages by Country

1. How to Read School Ages Around the World: Three Constants

Every system on this page is generated by three policy constants. Constant 1: the entry age — the age at which grade 1 begins, which clusters tightly at 6 (Japan, Korea, China, Vietnam, Thailand, France, Italy, Hong Kong’s P1, India’s Class 1, Bangladesh, Jamaica) with outliers at 5 (the Philippines’ kindergarten), 6–7 (Germany, Poland’s usual 7, South Africa’s year-of-7). Constant 2: the compulsory span — the ages the state can compel, ranging from Bangladesh’s five primary years (6–10) to the Philippines’ thirteen (5–18). Constant 3: the cutoff or cohort line — the birthday rule that converts a moving age into a fixed classroom, whether that line is April 1 (Japan), August 31 (China, the Philippines), 31 December (France), 30 June (Germany, most Länder), or 31 March (India).

The interaction of the three constants — not culture, not climate — explains nearly every difference families notice between systems. Two countries with identical entry ages can produce first-grade classrooms two years apart in internal age spread, purely because one uses a single hard cutoff and the other a rolling cohort window. That is why the explorer above reports the stage and the year-within-stage: when the parameter age = 13 and country = Japan, the state migrates to chūgakkō year 2 of 3 — but the same parameter in Germany lands mid-Gymnasium with a track decision already two years old.

2. School Ages in Asia: Japan, Korea, China, Vietnam, Thailand, the Philippines, Hong Kong, India, Bangladesh

East Asian systems share the 6-3-3 skeleton (six primary years, three lower secondary, three upper secondary) but differ in what the law compels and where the birthday line falls. South and Southeast Asia add structural variants: Vietnam’s 5-4-3 ladder, the Philippines’ K+12 with two senior-high years, India’s RTE span alongside the CBSE admission ladder.

Japan — the MEXT 6-3-3 ladder

Japan is the cleanest cohort system on this page. The school year starts April 1, and a child must be 6 by that date to enter elementary school (shōgakkō) — an April 2 birthday postpones entry by exactly one year, making Japanese classrooms almost perfectly same-age. Elementary runs six years (ages 6–12), lower secondary (chūgakkō) three years (12–15), and together they form the compulsory span; upper secondary (kōkō) covers 15–18 and is voluntary at roughly 99% attendance. The MEXT lower secondary school age japan band and the MEXT upper secondary school age japan band are therefore 12–15 and 15–18, and the second year middle school japan age is 13–14.

South Korea — 9 compulsory years, new age counting

Korea’s ladder mirrors Japan’s (6-3-3) with a March start and a cohort born in calendar year X entering the March of X+7, so entry lands at 6–7 international age. The age for elementary school grades in South Korea runs 6–7 (grade 1) to 11–12 (grade 6); middle school covers 12–15; korean high school age spans 15–18, with graduation in February at 18 (19 for January–February birthdays). Since June 2023, all official documents use international age (man nai) — the old Korean-age count that made everyone a year “older” is gone.

China — 6-3-3 behind the August 31 line

Chinese school system ages follow the same 6-3-3 skeleton with a September start: primary (xiaoxue) 6–12, junior middle (chuzhong) 12–15, senior high (gaozhong) 15–18. The Compulsory Education Law compels ages 6–15, with senior high voluntary though gross enrollment exceeds 90%. The August 31 cutoff in most localities is the hard line — a September 1 birthday waits a full year, which is why the phrase “born just past the line” is a common parenting complaint in China.

Vietnam — the 5-4-3 ladder

Vietnam’s ladder is one grade shorter at the bottom: the age for grade 1 primary school in Vietnam is 6, primary has five grades (6–11), lower secondary (THCS) four grades (11–15), and upper secondary (THPT) three grades (15–18). The vietnam upper secondary school grade 11 age is 16–17. Compulsory schooling covers the first nine years (6–15), and the THPT national exam closes grade 12 at 17–18.

Thailand — compulsory from 7, enrolled at 6

Thailand’s statute sets the compulsory span at 9 years from age 7 to 16 — yet most children start Prathom 1 at 6–7, because the May school year and flexible birthday rules let families enroll early. Primary runs 6–12 (Prathom 1–6), lower secondary (Mattayom 1–3) 12–15, and the age range for Thai high school students is 15–18 across Mattayom 4–6. Graduation lands at 18 in March.

Philippines — the DepEd register table

The Philippines runs the longest compulsory ladder on this page: kindergarten at 5 (age 5 by August 31 for public schools), grade 1 at 6, and 12 grades after it under the Enhanced Basic Education Act of 2013. The deped school register age table advances exactly one year per grade, which makes it the most predictable age table in Asia. The age range for senior high school students in the Philippines is 16–18 across grades 11–12 — the two SHS years that did not exist before the 2013 reform. For a birthday-precise computation, use our school age calculator by country, which includes the Philippines.

Hong Kong — the 5y8m window

Hong Kong’s primary school age range runs P1–P6 at roughly 6–12, but the entry rule is a band rather than a birthday: the EDB allocates Primary 1 places to children aged 5 years 8 months to 6 years 8 months at September, the widest entry window in Asia on this page. Junior secondary (S1–S3) covers 12–15 and closes the 9-year compulsory span; senior secondary (S4–S6) runs to 18 with the DSE exam at 17–18.

India — RTE span meets the CBSE ladder

India runs two overlapping rule systems. The RTE Act makes education free and compulsory for ages 6–14. Separately, the age to start school in india for CBSE-affiliated schools is governed by admission criteria: Class 1 requires 6 years completed by 31 March of the admission year, and the age criteria for school admission 2025-26 therefore admit children born on or before 31 March 2019 into the April 2025 intake. The age limit for LKG in cbse schools is 3 by 31 March (many schools prefer 3.5), UKG follows at 4, Class 8 at 13–14, and Class 12 boards at 17–18. State boards differ — Kerala admits Class 1 a year earlier, and private schools routinely stretch the chart — so the age chart for school admission 2025-26 shifts at the edges every year and must be re-verified against the specific school.

Bangladesh — five compulsory years, longer ladder

Bangladesh compels only five years: primary education (Classes 1–5) for ages 6–10 under the 1990 Act. Beyond it, junior secondary runs Classes 6–8 at ages 11–14 — the bangladesh secondary school class 8 age is 13–14 — then SSC exams in Classes 9–10 at 15–16 and HSC at 17–18. The gap between the short compulsory span and the near-universal continuation is one of the widest on this page.

3. School Ages in Europe: France, Germany, Poland, Italy

Europe’s compulsory starts scatter more than Asia’s — 3 in France, 5 in the UK, 6 in Germany and Italy, 7 in Poland — while its graduation ages converge at 17–19. The four systems below cover the search queries families ask most; the UK, Ireland and others are handled by our dedicated country calculators (linked at the end).

France — compulsory at 3, CP at 6

Since 2019, instruction obligatoire in France begins at age 3 — but grade 1 still begins at 6. The France school levels CP CE1 CE2 CM1 CM2 ages advance one year per level: CP at 6, the ce1 age france primary school expects is 7, CE2 at 8, CM1 at 9, CM2 at 10–11. The cohort line is 31 December (children turning 6 during the calendar year enter CP that September), so rentrée classrooms span 5y8m–6y7m. Collège (6e–3e) covers 11–15, lycée 15–18, and the baccalauréat lands at 17–18.

Germany — 16 Ländert, 16 cutoffs

Germany has no national school age: each Land sets its Stichtag (mostly 30 June, some September 30, Berlin flexible), its Grundschule length (four years almost everywhere, six in Berlin and Brandenburg), and its Gymnasium route (G8 or G9). The constants: entry at 6, the track decision at 10, compulsory full-time schooling to 15–16 with part-time Berufsschule to 18. The high school graduation age in germany is 18–19 under G9 (the dominant route) and 17–18 under G8, with earlier exits at Hauptschulabschluss (~15) and Mittlere Reife (16).

Poland — the 8-year primary

Poland’s 2017 reform created an eight-year szkoła podstawowa: grades 1–8 covering ages 7–15, with the typical age for 8th grade in polish primary school at 14–15 and the egzamin ósmoklasisty exit exam closing primary. Entry begins the September of the year the child turns 7 (six-year-olds may enroll on request). Compulsory schooling (obowiązek szkolny) runs 7–15, then an education obligation (obowiązek nauki) extends to 18; the 4-year liceum ends with matura at 18–19.

Italy — the 10-year compulsory span

The age requirements for schools in italy: scuola primaria entry at 6 (children must turn 6 by 30 April of the following year, so entry classrooms can include 5y9m-olds), lower secondary 11–14, upper secondary 14–19. Italy’s compulsory span runs 10 years (6–16) — two years beyond lower secondary, one of the longest universal spans in Europe. The esame di stato (maturità) closes the 5-year academic and technical tracks at 18–19; 3-year vocational programs finish at 17–18.

4. School Ages in Africa and the Caribbean: South Africa, Jamaica

South Africa — the Schools Act’s 7-to-15 rule

The south african schools act compulsory school attendance age rule is precise: attendance is compulsory from the first school day of the year in which the child turns 7 until the last school day of the year in which the child turns 15 — or the end of Grade 9, whichever comes first. Grade R (reception) at 5–6 precedes it, Grades 1–7 cover 7–13, and Grades 8–12 run 13–18, closing with the matric National Senior Certificate at 17–18. Admission circulars add a practical 30 June check for Grade 1 placement.

Jamaica — graduation at 17, not 18

Jamaica’s ladder explains its early graduation: primary Grades 1–6 run 6–12 (closed by the PEP exit exam), then high school Grades 7–11 run 12–17. What age do you graduate high school in jamaica: about 17, after CSEC exams sat in Grade 11 at 16–17 — a year earlier than most systems here because the secondary ladder is five grades, not six. The Education Act targets compulsory attendance from 6 to 16, with enforcement historically uneven, and optional sixth form (Grades 12–13) carries CAPE students to 18–19.

5. Compulsory School Age by Country: The Assessment Table

The table below compresses every system on this page into the three constants that matter: entry age, compulsory span, and graduation. Filter by region to compare — the pattern is stark: Asia runs 9-year spans with hard single-day cutoffs; Europe splits its starts from 3 to 7; the two longest compulsory spans on this page are France’s 3–16 and the Philippines’ 5–18.

6. The Deviation Layer: Policy Ages vs Classroom Ages

Every guide repeats the policy numbers; classrooms contain a distribution. The deviation between the two is a function of the cutoff architecture, and it follows a derivable pattern: a cohort line (Japan’s April 1, France’s December 31, Korea’s March window) produces a spread of almost exactly 11 months inside one grade; a hard single-day cutoff (China’s August 31, the Philippines’ August 31) produces the same 11-month spread but with an all-or-nothing edge; a flexible band (Hong Kong’s 5y8m window, Italy’s April 30 spring line) produces spreads of 12–14 months by design. The policy figure “entry at 6” is therefore a nominal constant — the measured classroom reality is a ±5–7 month interval around it.

1. Derivation, step 1: cohort = all births from the day after the cutoff to the cutoff itself — a 365-day window.
2. Step 2: on entry day (September 1 in most systems), the oldest cohort member is 6y + (entry − cutoff) months and the youngest is that figure minus ~11 months.
3. Step 3: the ±5.5-month spread persists unchanged through every subsequent grade — an 11-month age gap between two classmates in grade 1 is still an 11-month gap in grade 12, now expressed as developmental distance at 18.
4. Step 4 (scaling): as cohorts scale, the spread compounds into the well-documented relative age effect — the youngest members of a cutoff cohort are systematically diagnosed, retained, and tracked differently from the oldest, in every country measured. The gap never closes because the cohort structure never closes.

7. Two Thinking Traps and the Extreme Values That Expose Them

Extreme values stress-test the model. A child born April 2 in Japan enters elementary a full year behind an April 1 friend — 366 days of birthday deciding 12 years of schooling. A child born March 31 in India barely clears the CBSE Class 1 line; born April 1, the same child waits another year under most school charts. The Philippines’ August 31 kindergarten line converts late-August birthdays into the youngest kindergartners in Asia despite a tropical school year that starts in June. And in Hong Kong, the 5y8m band edge means two children born one month apart can be assigned to different cohorts — the only system here where placement is a window, not a line.

8. School Ages Around the World — FAQ