The Special Investigation Team (SIT) presented the accused in the Patna civil court which sent them to jail, a district police official said.
Those remanded to judicial custody are Viseshwar Prasad Yadav, the principal-cum-centre superintendent of Government Boys High School Rajendra Nagar, Patna; Sanjiv Kumar Suman, a mathematics teacher of the same school; Shambhu Nath Das, section officer and Ranjit Kumar Mishra, assistant at the confidential wing of the Inter Council; and Shail Kumari, principal-cum-centre superintendent of G.A. Inter College, Hajipur.
They were arrested by SIT on Thursday, police said.
However, former Bihar School Examination Board Chairman Lalkeshwar Prasad Singh and Bachcha Rai, director-cum-principal of VR College in Vaishali district, both accused in the case, are still absconding.
Mr Singh is being probed for his alleged involvement in the 12th Board merit list scam.
According to police, evidences gathered so far indicated that Singh was involved in the scam in which the answer books of certain examinees were tampered with to increase their scores and push them up in the merit list.
Patna Senior Superintendent of Police Manu Maharaj, who is heading the SIT, said raids are being conducted in search of Singh and Rai.
According to the FIR, fraud was committed by VR College authorities to influence the results.