"We wish him well in his future endeavours."
Ms Anderson would not disclose the nature of Mr Edwards' departure and the Advocate was unable to reach him yesterday for comment.
Mr Edwards' departure comes amid an ongoing exodus of staff.
A number of teachers left at the end of last year, including a deputy principal, who now heads Opua School.
Two more left at the end of term one and another is reportedly on long-term sick leave. At least three members of the board of trustees have resigned in the past two years.
A report by the Education Review Office earlier this year was highly critical of the school's leadership. Its authors said relationships between Mr Edwards and teachers, the Maori community and the board had steadily deteriorated since his appointment three years ago.
The Education Ministry appointed a limited statutory manager in early 2012 but disharmony had continued. Staff were suffering "significant discontent and low morale" and conflict at the school was impeding progress at many levels, the report said.
Ms Anderson said a relief principal would be in place for term 2 and would stay until a new principal was appointed.
In the meantime, Annette Wynyard would be acting principal in the first week of the holidays and Zorina Wigglesworth in the second.