The William S. Hart Union High School District governing board meeting scheduled for tonight will likely be postponed until June 18, officials said Tuesday. The district anticipates less than a quorum of the board will be available for meeting. If such is the case, the secretary to the board will adjourn the meeting and continue the public hearings to the June 18 meeting. For information, call Lorraine King at (661) 259-0033, Ext. 201.