Concept:
This question links specific educational reforms and legal mandates to the policy documents or legal rulings that established them.
Step 1: Matching Features to Documents.
• A. Private-Philanthropy Education $\leftrightarrow$ I. NEP 2020: The National Education Policy 2020 encourages "light but tight" regulation and philanthropic participation in schools.
• B. No retention till class VIII $\leftrightarrow$ III. RTE-2009: The "No Detention Policy" was a key part of the Right to Education Act to ensure students stay in school.
• C. No corporal punishment $\leftrightarrow$ IV. Supreme Court Judgement: Various SC rulings (and subsequently RTE) strictly banned physical punishment in schools.
• D. Teacher's Professional Standards $\leftrightarrow$ II. NPST: The National Professional Standards for Teachers (NPST) is a specific document focused on quality benchmarks for the teaching profession.
Step 2: Conclusion.
The correct mapping is A-I, B-III, C-IV, D-II.