Authorities say 43-year-old Sara Butler and her 23-year-old daughter, Bessie, haven't appeared before a judge since their arrest Friday outside Upper Darby High School.
Police say the women went to the school along with two more of Sarah Butler's children, 22-year-old Joanne Butler and a 14-year-old son, to demand another family member be dismissed from class.
The Delaware County Daily Times reports a police affidavit says the school denied that request because Butler was not the custodial parent.
Joanne Butler was released on bail on charges including indecent exposure and disorderly conduct.
A phone listing for the family could not immediately be located.
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Information from: Delaware County Daily Times, http://www.delcotimes.com