Tonga vs Zambia: Theoretical duration of upper secondary education (years), annual
Tonga
0 % change on previous year
in 2025
Zambia
0 % change on previous year
in 2025
Tonga rank
1st
Zambia rank
1st
Theoretical duration of upper secondary education (years), annual over time
- Tonga
- Zambia
How they compare
Tonga currently reports 0 % change on previous year against 0 % change on previous year in Zambia, a difference of 0 % change on previous year.
The two have swapped places 4 times across 55 shared years of data; in 1971 it was Zambia ahead.
Tonga ranks 1st and Zambia ranks 1st of 221 countries.
Across the 6 decades both report, Tonga averaged higher in 1 and Zambia in 1.
Head to head by decade
| Decade | Tonga | Zambia | Difference | Ahead |
|---|---|---|---|---|
| 1970s | 0 % change on previous year | 0 % change on previous year | 0 % change on previous year | — |
| 1980s | 5 % change on previous year | 5 % change on previous year | 0 % change on previous year | — |
| 1990s | -3.33 % change on previous year | 0 % change on previous year | 3.33 % change on previous year | Zambia |
| 2000s | 0 % change on previous year | 0 % change on previous year | 0 % change on previous year | — |
| 2010s | 0 % change on previous year | 0 % change on previous year | 0 % change on previous year | — |
| 2020s | 8.33 % change on previous year | 0 % change on previous year | 8.33 % change on previous year | Tonga |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher theoretical duration of upper secondary education (years), annual, Tonga or Zambia?
- Tonga, at 0 % change on previous year against 0 % change on previous year in Zambia as of 2025.
- What is the difference in theoretical duration of upper secondary education (years), annual between Tonga and Zambia?
- 0 % change on previous year, with Tonga ahead.
- How many years of comparable data are there for Tonga and Zambia?
- 55 years are reported by both, from 1971 to 2025.
- How do Tonga and Zambia rank globally for theoretical duration of upper secondary education (years), annual?
- Tonga ranks 1st and Zambia ranks 1st of 221 countries.
- Where does this data come from?
- Statizoid (derived), published as Theoretical duration of upper secondary education (years), annual growth rate. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
The year-on-year percentage change in Theoretical duration of upper secondary education (years). Computed from consecutive annual observations; years either side of a gap are skipped rather than bridged.