CHANGES will be made to the way science experiments will be conducted in Queensland Catholic Education schools because of Roma's caustic soda accident in August.

About 57 Roma St John's Catholic College students were treated for chemical burns to their faces and arms on August 27 when a science experiment went wrong and exploded.

Students who were sprayed with the corrosive chemical have been provided with counselling and new uniforms.

Diocese of Toowoomba Catholic Education John Borserio said sodium hydroxide was now banned from use unless in a laboratory.

"Any incident in a school or workplace that compromises the safety of people or environment must be formally investigated," Mr Borserio said.

"Queensland Workplace Health and Safety visited St John's on the day after the accident and we have their report.

"They have issued a prohibition notice to us as a system that means that the hazardous chemical used during the science demonstration is not to be used other than in a controlled setting such as a laboratory."

Mr Borserio said a second investigation would be undertaken by Catholic Education.

"This is a key action in our Critical Incident Management procedure and will enable us to share learning and aid us all in our continual improvement of health and safety practices in our schools and office," he said.