Now, the real dean of discipline is on the case.

Suffolk County DA Tom Spota is investigating a Long Island school district embroiled in a scandal in which top administrators allegedly inflated grades for a star football player last year, The Post has learned.

An investigator has been conducting interviews with several South Country School District board members and teachers, sources said.

The office would not comment on their probe.

Administrators at Bellport HS, including longtime coach and current Superintendent Joe Cipp Jr., were implicated in a recent report issued by an independent investigator.

That report said Cipp and two other top officials inflated Ryan Sloan’s grades in 2011 so that he could gain a scholarship to Syracuse University. Cipp and other brass have denied any wrongdoing.