In the raid, the ACB found that some teachers were carrying chits in their pockets which they were giving to students in lieu of money.
The ACB acted after getting complaint on the anti-corruption helpline 1031.
The complainants said that some teachers of Sarvodya Bal Vidyalaya, Rana Pratap Bagh in Model Town were allowing and encouraging students of classes 11 & 12 to cheat in their final exams of the Open School after accepting bribes.
According to a senior government official, the ACB laid the trap with the help of decoy customers. The teachers were caught while accepting bribes between Rs 20,000 and above from each student.
"The search carried out by the ACB resulted in recovery of chits from pockets of teachers containing written answers of questions asked in the exam, which were to be provided to students depending on bribes to be paid by them per question.