The Care Inspectorate has confirmed it has started an investigation into the quality of care at a private School in Aberdeen.
Established in 1975, Hamilton School in Aberdeen caters for children between three months and 12 years old.
A spokesman for the Care Inspectorate said: "We have become aware of allegations in connection with the Hamilton School Nursery in Aberdeen.
"These have been passed to Aberdeen City Council who, as is normal with allegations of this nature, will determine if there are child protection issues to be investigated.
Hamilton School owner Kathlyn Taylor said: "The Care Inspectorate are responding to allegations initiated by a disgruntled former employee in the nursery department and they of course are duty bound to investigate any complaints.
"We will offer them every support in their investigation but I am completely satisfied with my staff and procedures at the school. I am appalled that this situation has arisen and I feel that this is nothing more than a personal attack against me, my family and the school that I have built up for 40 years.
"We have an exemplary history and we continue to maintain the highest possible standards of care and education for all of our children. We are greatly reassured by the many messages of support which our parents, former parents and staff have offered in relation to this issue."