Link to study from the Pioneer Institute:
From the study:
“While
collective bargaining negotiations, the primary benefit the union provides,
occur at the local association level, the majority of dues are sent to the
state and national unions,” said Rebekah Paxton, author of “Where
Do Teacher Union Dues Go?” “If only 16 percent of
annual dues are retained at the local level, it appears that most dues revenue
funds state and national administrative salaries and activities to increase the
unions’ political influence.””