opinion: BOARD OF EDUCATION OF PARIS UNION SCHOOL DISTRICT NO. 95 et al. v. VAIL
  No. 83-87.
  Argued February 28, 1984
  Decided April 23, 1984
  Thomas R. Miller argued the cause and filed briefs for petitioners.
  Marc J. Ansel argued the cause and filed a brief for respondent.
  Briefs of amici curiae urging affirmance were filed for the American Association of University Professors by Ralph S. Brown, Lawrence White, AnnH. Franke, and Victor J. Stone; and for the National Education Association et al. by Michael H. Gottesman, Robert M. Weinberg, and Charles S. Sims.
  Gwendolyn H. Gregory filed a brief for the National School Boards Association as amicus curiae.
  Per Curiam.
  The judgment is affirmed by an equally divided Court.
  Justice Marshall took no part in the decision of this case.
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