There are around 400 students at the decile 10 school, based in Birkenhead.
The school principal, Sue Mulcahy, did not respond to a request for comment on Monday.
After yesterday's article, board of trustees chairwoman Ingrid van Rijn said she was now the go-to person, as the principal would not be available.
Dr van Rijn said the school did not think it to be in the best interest of students to discuss complaints in the media. "[We] prefer to communicate with the school community directly."
In a newsletter sent to parents yesterday, the board of trustees defended its decision not to make parents aware of the outcome of the latest ERO report, released last month.
"Chances are you have seen the article in the Herald this morning about the Chelsea ERO report, so we thought it would be useful to provide you with some background information.
"As a board, we made the decision at the time not to publicise the review until we were in a position to be able to tell our school community what we were doing to address the issues raised," the statement said.
"As part of this we were keen to understand the next response from the Ministry of Education before communicating about the report so as to provide full information to our community."