Previously a community school administered by Hertfordshire County Council, in September 2015 Turnford School converted to academy status and was renamed Haileybury Turnford.

Hertfordshire County Council continue to coordinate its admissions.

Haileybury College, an independent school in Hertford, became its sponsor, and a new uniform was introduced and the school colours were changed from green to magenta.

Ofsted rated Haileybury Turnford as a 'Good School' in March 2022, recognising the high quality of education now evident at the school.

Haileybury Turnford opened one new building in September 2021, and the rest of the school will be completely redeveloped in the next 2–3 years.