Formal schooling is divided into primary, lower secondary, and upper secondary levels. How many years does this typically span?

• A. 10 years
• B. 12 years
• C. 9 years
• D. 11 years

Answer: (B)

The total time spent across primary, lower secondary, and upper secondary is typically twelve years. This comes from primary commonly lasting six years (grades 1–6), lower secondary four years (grades 7–10), and upper secondary two years (grades 11–12). Added together, that’s 6 + 4 + 2 = 12 years, often aligning roughly from ages six to eighteen. While some countries adjust the lengths of each level, the standard three-tier structure most often sums to twelve years.