The University of NSW released a scathing report on the implementation of the merger.

The report said Murrumbidgee Regional High School's organisational structure "remains somewhat unchanged" and the additional value created through the consolidation, such as extra subjects, "is not clear".

Less than a quarter of the teachers surveyed said they were often satisfied with being a teacher at the school in 2019, compared to 52.2 per cent in 2018. The national average in Australia is 81.9 per cent.

Meanwhile, only 51 per cent of students felt that teachers were interested in every student learning in most or all lessons.

MRHS released a response to the report, obtained by The Area News, which outlining steps which had been taken to address issues, including hiring extra deputy principals, a business manager and support staff.

The response highlighted future efforts to improve communication with the school community, refine job descriptions and monitor changes made to improve learning outcomes.

Teachers' Federation organiser Brett Bertalli said the union wanted to see action on the report's recommendations including further additional resources for recruitment, teacher support and improvement in the leadership structure.

Mr Bertalli wanted to see the NSW Department of Education release their own response to the UNSW report.

"We expect the department will have a comprehensive response to the report," he said.

Mr Bertalli said staff hadn't been given time to complete the extra work needed for the school merger and the school's leadership structure needed to be improved.

"Incentives are needed to attract and retain quality staff," he said.

Mr Bertalli said MHRS had experienced difficulty with recruitment with potential staff accepting a position before later reneging when an alternative was available.

He said while teachers were accepting of changes, such as the school merger, there had been little time to complete the work needed, which in turn affected lesson quality.

"(Students) can see teachers struggling," Mr Bertalli said.

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A spokesman for the NSW Department of Education welcomed the UNSW interim report saying it was "valuable feedback".

"The merger of the Wade and Griffith schools is a cultural and logistical challenge that the school community, department and broader community decided to undertake together to provide the best educational outcomes for their students," the spokesman said.

"The school and department acknowledged that there would be challenges transitioning from two separate schools to the one school-two sites model and this is why it contracted the University of NSW to deliver ongoing procedurally fair and transparent evaluations of the progress of the merged school from prior to the merger through to June 2022."

The spokesman said several issues identified in the report were being addressed by the school's leadership, including creating extra time for staff for professional development, leadership responsibilities, and to develop processes and systems to enhance student well-being.

"The department will continue to work closely with the school and provide all necessary resources to help the school achieve the best results for its students."