1949
Relocated to Park House, Hertingfordbury Park estate
The estate dates back to medieval times and was mentioned in the Domesday book. The estate was much larger then and has been in royal ownership and used as a deer park. The original manor house and walled gardens were designed by Sir Christopher Wren.
1950
New purpose-built accommodation completed
1996
Renamed St Joseph's In The Park
The school was renamed to link with its history in Hertingfordbury Park.
2009
New Development Projects
Development projects included a sports field, landscaping around the swimming pool, a new music room with additional teaching and practice rooms for the use of our peripatetic teachers and a large car park. During the second phase, an Art and purpose-built wrap around care room, a new Woodlands Department for Learning, Reception and Bursary were added.
2017
Anniversary Celebration Year
St Joseph's In The Park has provided education for 120 years. This year marked the development of Parklands Cottages.
2023
Joined the Mill Hill Education Group
The Mill Hill Education Group's collection of schools spans from London and the surrounding areas to as far as Thailand. With over 250 acres of scenic grounds across all locations, there is plenty of room for woods, fields, sports pitches and much more, providing pupils with plenty of space to grow. Mill Hill Education group are proud to offer an outstanding education across all schools.
2025
ISI Report
The school community was regarded as a significant strength of St Joseph's in the Park in the June 2025 ISI report.
2025
The School is renamed as Hertford Prep
