What follows is an opinion from the Supreme Court of the United States. Your task is to identify the disposition of the case, that is, the treatment the Supreme Court accorded the court whose decision it reviewed. The information relevant to this variable may be found near the end of the summary that begins on the title page of each case, or preferably at the very end of the opinion of the Court. For cases in which the Court granted a motion to dismiss, consider "petition denied or appeal dismissed". There is "no disposition" if the Court denied a motion to dismiss.

Opinion:
BOARD OF EDUCATION OF OKLAHOMA CITY v. NATIONAL GAY TASK FORCE
No. 83-2030.
Argued January 14, 1985
Decided March 26, 1985
Dennis W. Arrow argued the cause for appellant. With him on the briefs were Larry Lewis and James B. Croy.
Laurence H. Tribe argued the cause for appellee. With him on the brief were William B. Rogers and Leonard Graff
Briefs of amici curiae urging reversal were filed for Concerned Women for America Education and Legal Defense Foundation by Jordan W. Lorence; for the State of Oklahoma by Michael C. Turpén, Attorney General, and David W. Lee, Assistant Attorney General; for the National School Boards Association by Gwendolyn H. Gregory, August W. Stein-hilber, and Thomas A. Shannon; and for the Washington Legal Foundation by Daniel J. Popeo, Paul D. Kamenar, and George C. Smith.
Briefs of amici curiae urging affirmance were filed for the American Association for Personal Privacy et al. by Thomas F. Coleman and Jay M. Kohom; for the American Association of University Professors by Ann H. Franke, Ralph S. Brown, and Matthew Finkin; for the Center for Constitutional Rights et al. by Anne E. Simon, Sarah Wunsch, and Rhonda Copelon; for the Lambda Legal Defense and Education Fund, Inc., et al. by Abby R. Rubenfeld and Rosalyn Richter; for the National Education Association et al. by Robert Chanin and Robert M. Weinberg; and for the State of New York et al. by Robert Abrams, Attorney General of New York, Robert Hermann, Solicitor General, Lawrence S. Kahn, Assistant Attorney General, and John K. Van de Kamp, Attorney General of California.
Per Curiam.
The judgment is affirmed by an equally divided Court.
Justice Powell took no part in the decision of this case.

Question: What is the disposition of the case, that is, the treatment the Supreme Court accorded the court whose decision it reviewed?

Choices:
stay, petition, or motion granted
affirmed (includes modified)
reversed
reversed and remanded
vacated and remanded
affirmed and reversed (or vacated) in part
affirmed and reversed (or vacated) in part and remanded
vacated
petition denied or appeal dismissed
certification to or from a lower court
no disposition

Answer: 1