The complainant had approached Santoshkumar Shankarlal Agrawal (54), the headmaster of the Paratwada-based Sunderbai Boys High School, on July 9 for getting admission for his son in class VII, Deputy Superintendent of Police, ACB, R N Ghule said.
The head master allegedly demanded Rs 2,100 from him and asked him to get pre-permission from Education Officer of Amravati, he said.
The complainant then approached the Education Officer and after seeking his permission on July 11, he returned to the headmaster for the admission.
The complainant then approached the ACB, Amravati and lodged a complaint against the headmaster.
Subsequently, the ACB laid a trap in the school premises and caught the headmaster yesterday while he was accepting the bribe, he said.
Agrawal was arrested and an offence was registered against him under relevant sections of Prevention Corruption Act, he added.