The case was registered based on a complaint by Subhash Dudeja, Principal, Government Senior Secondary School, Dhauj Faridabad, accusing three persons of committing fraud by using three others to write the test held in 2011.
The accused have been identified as Vikas, Sandeep Kumar, Rajkumar, Arun Kumar, Anil and Rajesh Kumar.
On the basis of the complaint, six separate cases were registered against the accused at under sections 419 and 420 of IPC.
The police have started investigations and launched a hunt for the accused, said SI Lachman Singh.