Tucumcari High School Principal David Castillo resigned on Tuesday, according to Assistant Superintendent Dennis Roch.
Roch said Castillo's resignation is effective June 16. He declined to provide additional information, citing personnel matters.
School officials placed Castillo on paid administrative leave on Nov. 11, following allegations of administrative misconduct.
Officials have declined to provide details about the alleged misconduct.
Castillo could not immediately be reached for comment.
Roch would not say specifically whether Castillo will remain on paid leave until June 16, again citing personnel matters.
School officials had scheduled a board meeting for 9 a.m. Thursday, at Castillo's request, to discuss Castillo's situation. That meeting was canceled on Monday, though officials did not say why.
Superintendent Aaron McKinney, contacted prior to Castillo's resignation on Tuesday, declined to comment on any matters related to Castillo because of "pending litigation." It was not clear Tuesday whether any lawsuits have been filed in connection with Castillo's case.
Jack Burch, a former superintendent of Elida Schools, has been serving as the high school principal since January.