In the new National Education Policy draft, the period of middle or upper primary school education was:

Explanation:
The National Education Policy (NEP) 2020 restructured school education into the 5+3+3+4 pattern, replacing the earlier 10+2 structure.
In this new structure:

The Middle Stage refers to Grades 6 to 8, which spans 4 years.

This stage emphasizes experiential learning and critical thinking, especially in subjects like mathematics, science, social science, and the arts.

(1) 2 years – No stage in the NEP framework is 2 years long.

(2) 3 years – The Preparatory Stage (Grades 3 to 5) is 3 years, not the Middle Stage.

(4) 5 years – The Foundational Stage (pre-school to Grade 2) is the only one that spans 5 years.

Information Booster:
NEP 2020 introduced the 5+3+3+4 structure as follows:

Foundational Stage: 5 years (pre-school + Grades 1–2)

Preparatory Stage: 3 years (Grades 3–5)

Middle Stage: 4 years (Grades 6–8)

Secondary Stage: 4 years (Grades 9–12)

This design is based on cognitive development stages and aims to improve learning outcomes across all levels.