Four representatives of the Protestant and Catholic faiths will discuss the controversial subject of "Public Aid to Parochial Education" at the spring's fourth Law School Forum, at 8 p.m. tonight in Rindge Tech auditorium.

Speakers will include Dr. G. Bromley Oxnam, Bishop of the Methodist Church in the New York area, James M. O'Neill, Professor of Speech at Brooklyn College and prominent Catholic layman, Dr. Vincent A. McCrosson, professor of languages at Boston College, and Dr. George Hunston Williams of the Harvard Divinity School.

Although the title of the forum specifically names parochial schools, the speakers will debate public aid to all schools, supported by religious groups. Dr. Robert Ulich, Professor of Education, will serve as moderator.