Concept:
The Seventh Schedule of the Constitution of India divides legislative powers between the Union and the States into three lists:
• Union List
• State List
• Concurrent List
Subjects in the Concurrent List can be legislated upon by both Parliament and the State Legislatures.
Step 1: Know the constitutional position of Education.
Originally, Education was included in the State List.
However, through the:
\[
\boxed{\text{42nd Constitutional Amendment Act, 1976}}
\]
Education was transferred from the State List to the Concurrent List.
Step 2: Understand the significance of the Concurrent List.
Since education is now in the Concurrent List:
• Parliament can make laws on education.
• State Legislatures can also make laws on education.
• If there is a conflict, the Central law generally prevails.
This ensures uniform educational standards across the country while allowing states to address regional needs.
Step 3: Analyse the options.
• Union List -- Incorrect.
• State List -- Correct only before 1976.
• Residuary Powers -- Incorrect.
• Concurrent List -- Correct.
Step 4: Final conclusion.
Therefore, Education as a subject of legislation is included in the:
\[
\boxed{\text{Concurrent List}}
\]