The charity through which former Pennsylvania State University assistant football coach Jerry Sandusky allegedly met his accusers joined Tuesday in a growing chorus objecting to subpoenas issued by his defense attorney.

The Second Mile, the nonprofit for underprivileged youth Sandusky founded in the '70s, asked a judge to toss out requests for disciplinary files on clients and records of any internal investigations into alleged sexual abuse.

Also Tuesday, the Mifflin School District filed a motion to quash another subpoena from Sandusky's attorney, Joseph Amendola. School system attorney Orris C. Knepp III said that the lawyer had requested privileged information such as grade reports, disciplinary records, and psychological evaluations on one of his client's accusers, who attended school there.

The dual complaints came one day after another central Pennsylvania school system — the Keystone Central School District in Lock Haven, Pa. — objected to a similar request from Amendola involving another boy.

State prosecutors, as well, have sought to have those and other subpoenas thrown out, arguing that they improperly revealed the names of the former coach's purported victims and requested information that a judge has already denied Amendola.

Sandusky has denied charges that over a 15-year period he molested at least 10 boys, all of whom, prosecutors allege, he met through the Second Mile.

The subpoena served on the charity makes more expansive demands than those against the school districts.

In it, Amendola requests any documents the charity received from school districts, children and youth counselors, or probation officers regarding Sandusky's purported victims, and internal reports dealing allegations of misconduct, as well as a guest list and seating chart from the former coach's retirement dinner.

Sandusky resigned from the charity in 2010 in the face of the attorney general's investigation into the sexual-abuse claims against him.

The subpoena also references an agreement between the Second Mile and a specific donor whose name was redacted by the charity's attorneys in Tuesday's filing. It requests any documents detailing their financial relationship.

Judge John M. Cleland has given Amendola until Thursday to respond to complaints by the school districts, prosecutors, and the Second Mile, and said he would make a ruling soon after.

A judicial gag order prevented both Amendola and prosecutors from commenting Tuesday.

Contact Jeremy Roebuck at 267-564-5218 or jroebuck@phillynews.com, or follow on Twitter @jeremyrroebuck.