"Usha Sinha's membership of the party will not be renewed," Bihar JD-U President Basistha Narayan Singh told PTI.
Sinha was not occupying any party position in the party and since membership drive was on, it had been decided that her membership would not be renewed, he said.
Sinha was a former JD-U MLA from Hilsa in Nalanda district.
Wife of former Bihar School Examination Board Lalkeshwar Prasad Singh, she has been made a co-accused in the toppers scandal.
Both have gone into hiding and evading arrest after a warrant was issued against them by a court.
The Bihar JD-U President said since a government inquiry was going against her, it was decided not to keep her in the party.
Sinha, who joined as Principal of Ganga Devi Women College in Patna, has already been replaced by senior professor Kanchan Chakhaiyar after Magadh University decided to appoint him for the position.
Her husband is alleged to be the kingpin of the scam which was exposed by media by conducting interview of toppers of Arts and Science streams Ruby Rai and Saurabh Shreshta respectively, who gave unconvincing replies to very simple questions.
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