The mother of a young woman who slept with five male students has savaged the prestigious private school where she worked for putting a "junior, unqualified member of staff" in her daughter's position.

After 14½ months on remand, the 25-year-old former staff member at The Armidale School may serve no more jail time over the prolonged sexual abuse of boys as young as 15 during late 2014 and 2015.

In being asked by NSW District Court acting judge Christopher Armitage to consider the parents of the boys, the mother instead said: "My family's deepest and greatest regret is the trust we placed in The Armidale School."

The staff member (centre) from The Armidale School outside court. Credit:Brook Mitchell

She said the school, in northern NSW, had failed to provide appropriate levels of support to a "junior, unqualified member of staff".