The group of 13 men and eight women were ceremonially sworn in at an attestation parade at Charles Sturt University, Bathurst, following 10 weeks of training.

Corrective Services NSW Commissioner Peter Severin said the ceremony was held on the university grounds while construction works for a 220-bed expansion take place at Bathurst Correctional Centre.

"Congratulations to our new recruits," Mr Severin said.

"I wish them all the best as they embark on their new careers.

"It's also great to see that once the expanded Bathurst prison is up and running next year, there will be 65 new local jobs available."

Assistant Commissioner of Governance and Continuous Improvement Carlo Scasserra said the trainees participated in vigorous drills to prepare for situations they may face in a prison.

"Along with lessons in theory, the recruits conducted contraband searches with the Bathurst Immediate Action Team and undertook emergency response training with the specialised Security Operations Group," Mr Scasserra said.

"It's great that we can offer training in regional areas and I thank all the trainers who have provided guidance."

The recruits come from various career backgrounds including firefighting and truck driving. They will now undertake 12 months of on-the-job assessment to attain their Certificate III in Correctional Practice.