Pat Newman, president of the Te Tai Tokerau Principals' Association, welcomed the news that Moerewa was about to take back its school. He hoped the new board would be made up of people who knew Moerewa rather than appointed outsiders.
Mr Newman congratulated the principal and staff for keeping the school running during a difficult time.
But he said it was "absolutely criminal" that a school in one of Northland's poorest communities had been forced to pay a commissioner close to $200,000.
The money had come out of the school's operational budget, and could have been spent on teacher aides, classroom equipment, or school trips.
While the Education Ministry covers Mr Eru's travel and accommodation costs, his hourly rate is charged to the school.
"How has he improved the school for that money? What has he achieved?" Mr Newman said.
From July 2012 to July 2013, Mr Eru charged $149,361 to Moerewa School.
Of that, $53,500 was claimed back from the Ministry, leaving the school with a $95,000 bill.
The Advocate has requested the total cost of the Ministry's intervention at Moerewa School. The cost of a board of trustees for two years is about $7000.
Moerewa School received a glowing ERO report last year, as it did after the inspectors' previous visit.