Tonga: Over-age students, primary (% of enrollment)

Key figures

Since 1970 it is down 5.75 percentage points from 6.66% in 1970. The World Bank has no value for 23 of the years in between; the chart leaves those gaps open rather than joining across them.

What the numbers say

In 2015, Tonga's over-age students, primary (% of enrollment) fell 5.59 percentage points on 2014 (from 6.49% to 0.9%).

Across the 12 yearly changes before that (1971 to 2014), the average change was +0.36 percentage points and a typical year strayed about 2.49 percentage points from that (the standard deviation). This year's change was 2.4 standard deviations below that average, so it was unusually large compared with the rest of the record.

On record, the biggest yearly rise was 4.62 percentage points in 1983 and the biggest yearly fall was 5.59 percentage points in 2015. The numbers show how large and when, not why; for the cause, look at what happened in that country in those years.

Worked out from the yearly values above. How the checks work: standard deviation, z-scores and straight-line trends.

Closest to Tonga in the 2015 ranking

• Vanuatu — 1st of 4: 25.79%
• Equatorial Guinea — 2nd of 4: 22.58%
• Ethiopia — 3rd of 4: 12.12%

What this measures

Over-age students are the percentage of those enrolled who are older than the official school-age range for primary education.

All 23 values

Over-age students, primary (% of enrollment) in nearby economies

• Australia — 3.79% (2017)
• Brunei Darussalam — 4.08% (2018)
• Cambodia — 13.9% (2018)
• Fiji — 2.93% (2016)
• Hong Kong SAR, China — 2.57% (2018)
• Indonesia — 1.32% (2018)
• Kiribati — 3.41% (2017)
• Korea, Rep. — 0.76% (2017)
• Lao PDR — 10.61% (2018)
• Macao SAR, China — 3.99% (2018)

More education data for Tonga

• Primary school starting age (years) — 6 (2025)
• Primary education, duration (years) — 6 (2025)
• Lower secondary school starting age (years) — 12 (2025)
• Secondary education, duration (years) — 7 (2025)
• Primary education, pupils — 15,644 (2024)
• School enrollment, primary (% gross) — 108.79% (2024)
• Primary education, teachers — 818 (2024)
• School enrollment, primary, female (% gross) — 110.66% (2024)
• School enrollment, primary, male (% gross) — 107.14% (2024)
• School enrollment, primary (gross), gender parity index (GPI) — 0.95 (2020)

Reading data like this

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Questions people ask

What is Tonga's over-age students, primary (% of enrollment)?

0.9% in 2015, according to the World Bank (World Development Indicators).

How has it changed since 1970?

It is down 5.75 percentage points from 6.66% in 1970. The highest value was 18.82% in 1999 and the lowest 0.9% in 2015.

Is the latest change in over-age students, primary (% of enrollment) unusual for Tonga?

In 2015, Tonga's over-age students, primary (% of enrollment) fell 5.59 percentage points on 2014 (from 6.49% to 0.9%). Across the 12 yearly changes before that (1971 to 2014), the average change was +0.36 percentage points and a typical year strayed about 2.49 percentage points from that (the standard deviation). This year's change was 2.4 standard deviations below that average, so it was unusually large compared with the rest of the record.

Where does this data come from?

The World Bank's World Development Indicators, licensed CC BY 4.0. Original source: Stat Bulk Data Download Service, UN Educational, Scientific and Cultural Organization (UNESCO), uri: https://uis.unesco.org/bdds, publisher: UNESCO Institute for Statistics (UIS).

Source

World Bank, World Development Indicators, indicator SE.PRM.OENR.ZS, licensed CC BY 4.0. Original source: Stat Bulk Data Download Service, UN Educational, Scientific and Cultural Organization (UNESCO), uri: https://uis.unesco.org/bdds, publisher: UNESCO Institute for Statistics (UIS) Figures are fetched from the World Bank API and refreshed monthly; see the series on data.worldbank.org. The full definition and method are in the World Bank's metadata glossary. Comparisons use the same World Bank release.

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