ACB has arrested Rama Nand Sharma, principal of Sarvodaya Bal Vidyalaya in Pratap Bagh area, and three others identified as Shailender Bhushan, Rupesh Kumar and Sovinder Singh.
ACB had recently registered an FIR against five government teachers for allegedly allowing students to cheat in class 12 final exams after taking bribe from them.
In a raid, the ACB found that some teachers were carrying chits in their pockets which they were giving to students in return for money.
According to officials, invesigation found that a cheating racket was being run by the school principal Sharma.
Sharma had retired on July 31, 2013 from the school but got extension twice for one year each to continue as principal of the school.