opinion: RICHMOND UNIFIED SCHOOL DISTRICT v. BERG
  No. 75-1069.
  Argued October 5, 1977
  Decided December 6, 1977
  Arthur W. Walenta, Jr., argued the cause for petitioners. With him on the briefs was John B. Clausen.
  Mary C. Dunlap argued the cause and filed a brief for respondent.
  Jerry D. Anker, Robert E. Nagle, and David Rubin filed a brief for the National Education Assn, as amicus curiae urging affirmance.
  Per Curiam.
  The judgment of the Court of Appeals, 528 P. 2d 1208, is vacated and the cause remanded for further consideration in light of General Electric Co. v. Gilbert, 429 U. S. 125 (1976), and Nashville Gas Co. v. Satty, ante, p. 136, and for consideration of possible mootness.