[6] The government planned to collect the data digitally by mobile application named Bijaga- Bihar Jaati Adharit Ganana.

The digital work for caste-based enumeration in Bihar was entrusted to a Delhi-based company Trigyn Technologies.

[21] In second phase of the survey, which started on April 15, 2023 and end on May 15, 2023, people living in the households, their castes, sub-castes, and socio-economic conditions etc, were collected.

On 15 April 2023, Nitish Kumar launched 2nd phase of caste-based survey from his ancestral home at Bakhtiyarpur.

[44] On 7 July 2023, Patna High court reserved its verdict after hearing a total of 8 PIL pleas challenging various aspects of the survey.

[45] On 1 August 2023, Patna High Court gave judgement that holding caste survey in Bihar is valid and legal.

[54][55] Government of Bihar had filed a counter affidavit to this plea, informing the court that this anomaly was rectified on 25 April 2023 by instructing the enumerators to have three options for gender.

On 21 August 2023, Supreme Court of India bench comprising Justices Sanjiv Khanna and SVN Bhatti asked Central Government to provide a response within seven days regarding the survey's potential consequences[56][57] and subsequently scheduled the matter for resumed hearing on 28 August 2023.

[62][63][64] Government of Bihar reiterated its previously stated position that the Collection of Statistics Act, 2008, empowers it to conduct such an enumeration exercise in the interest of social justice.

[65] On 6 September 2023, Supreme Court of India bench of justices Sanjiv Khanna and SVN Bhatti posted the matter to October 3 and clarified that it had not granted any stay on the publication of the survey.

[66] On 6 October 2023, Supreme Court of India refused to issue any interim directive to restrain Government of Bihar from releasing more caste-census data, and listed the next hearing in the matter in January 2024.

[67][68][69][70] On 2 January 2024, Supreme Court of India asked Bihar government to release the break-up of the caste survey data in the public domain, and listed the next hearing in the matter on 5 February 2024.

[71] The finidings of the survey increased the overall reservation to 65% which was struck down by the Patna high court on 20th june 2024[72] Category-wise distribution of social groups.

[81] The survey also indicates that Hindus make up 81.99%, Islam 17.70%, Buddhism 0.08%, Christianity 0.06%, Jainism 0.01%, Sikhism 0.01%, and 0.13% adhere to other unclassified religious beliefs.

Prominent Schedule Caste leader of state, Chirag Paswan accused that it was done in order to reap political gains.

[12] On 5 October 2023, BJP MP from Patna Sahib Ravi Shankar Prasad said that no one met him or his family to collect their caste information and implied that the survey data was manipulated to suit RJD.

[101][102][103] Information and Public Relations Department, Bihar countered this allegation saying his and his family's data was collected as per norm.

Several reports revealed that forward castes were overrepresented in the number of legislators from Bihar contrary to their minute share in population.

[113] Bihar Government issued gazette notifications for raising the quota to 75% after Governor Rajendra Arlekar gave his assent to two bills.

On 20 June 2024, Patna High Court struck down 65 per cent reservation cap in government jobs and educational institutions.