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High School is an educational institute of Pachlakhi in the Siwan district, of Bihar, India. The school was established in 1956.
- Bhrigunath Rai(Principal)
- Om Prakash Yadav
- Bhagwat Prasad
- Ramchandra Ram
- Anand Kumar
- late Gajadhar Prasad Srivastava - first M.L.A. Siwan.
- Amar Shahid Phulena Prasad - revolutionary.
- late Azad Babu - revolutionary and founder member of High School, Pachlakhi.
- late Raghunath Prasad - scholar
- late Diwakar Prasad Srivastava - scholar and economist.
- H.P.Singh - retired Engineer in Chief.
- Srikrishna Tiwari- retired Headmaster of High school Pachlakhi and poet.
- Murlidhar Rai - retired IAS.
- Bhuwaneshwar Prasad - retired IAS.
- Anurag Kumar - IAS.
- Pramod Kumar Srivastava - IPS.
- Raja Babu - retired Engineer in Chief.
- Mohan Prasad - retired Professor.
- Ajay Kumar - retired Professor, Department of Hindi, Maithan.
- Prabhakar Prasad - Professor MIT Muzaffarpur.
- late Vinay Kumar - retired Health Inspector, Padrauna.
- Dharmendra Kumar - Executive Engineer, Ordnance Factory, Dehradun.
- Amit Kumar - CEO of a private company.
- Sunil Kumar - retired Zone Manager, Sarabhai Piramal Limited,Bihar-Jharkhand.
- Manish Kumar - Zonal Manager, Nalco, Punjab and Haryana.
- late Suraj Prasad - sdix times consecutive village head.
- Ravi Bhushan Sinha - TTI
- Dr. Kamla Sinha - retired Medical Officer, Bihar.
- Vijay Mantu - retired Programming Head, All India Radio, Indraprasth.
- Azad Shakti Sinha - photographer and cinematographer.
- Ankit Kumar - Noted Journalist, Currently working with Prabhat Khabar.