How India used 1931 census data to reshape its modern social and educational landscape

Cultures · Published 10 October 2026 Swipe more like this →

In short: In 1979, India launched a commission to address systemic caste-based inequality. By identifying groups through social, economic, and educational indicators, the government sought to reserve 27% of public jobs and university seats for those historically marginalized. The resulting policy triggered intense national debate, protests, and a landmark Supreme Court ruling.

Established under the leadership of B. P. Mandal, the commission was tasked with defining backwardness to address deep-seated caste stratification. Because caste-specific population data had not been collected since 1931, the commission extrapolated from that census to estimate that 52% of India’s population belonged to Other Backward Classes (OBC). To identify these individuals, the report utilized eleven distinct indicators, ranging from marriage ages and female labor participation to access to clean water and housing quality.

The commission argued that merit in an unequal society is often an illusion, as it combines native ability with environmental privilege. By assigning weighted points to these indicators, the commission classified castes as 'backward' if they scored at least 11 points on a 22-point scale. Although the commission initially suggested reservations proportional to the 52% population figure, legal constraints—specifically a Supreme Court cap on total quotas—limited the recommendation to 27%.

When Prime Minister V. P. Singh moved to implement these findings in 1990, the nation erupted in protests. Students, fearing for their future employment prospects, organized massive demonstrations that saw nearly 200 self-immolation attempts, resulting in 62 deaths. The policy was eventually challenged in the Supreme Court case Indra Sawhney v. Union of India. In 1992, the court upheld the 27% reservation, provided that a 'creamy layer'—wealthier individuals within the OBC category—was excluded from the benefits.

The scope of these reservations expanded significantly in 2006, when the government extended the 27% quota to premier central educational institutions like the IITs and IIMs. This move sparked further unrest, eventually settled by a 2008 Supreme Court ruling. Today, the legacy of the commission remains central to Indian social policy, reflecting a persistent effort to reconcile the historical impacts of colonial exploitation and traditional hierarchy with modern constitutional goals of equality.

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