, Oxfordshire · RG9 1HS
St Mary's Preparatory is a small, coeducational day prep school in Oxfordshire serving pupils aged 3–11. With 130 pupils across entry points at ages 3, 4, 7, 8, and 11, it offers a traditional preparatory education with an emphasis on pastoral care and academic foundations. The school remains unregistered with Ofsted, reflecting its recent establishment or small size within the independent sector.
Who thrives here
Pupils who benefit from a calm, nurturing environment with consistent routines; families seeking a traditional prep ethos without boarding pressure and with straightforward day-school logistics.
Percentiles within UK independent + grammar schools we track.
13 St Andrew's Road, Henley-on-Thames
, Oxfordshire
RG9 1HS
Nearest stations
Day fees at St Mary's Preparatory are approximately £16,500 per year (2024/25).
St Mary's Preparatory admits pupils at 3+, 4+, 7+, 8+, 11+. Entry is assessed by Assessment Day, Interview. See the Admissions section above for open days and key dates.
St Mary's Preparatory is a day school in Oxfordshire and does not offer boarding.
ISI rated St Mary's Preparatory “Good” (2025). This grading is no longer issued — both inspectorates have since changed how they report outcomes.
Frequently praised
✓Warm, family-like atmosphere with strong pastoral care
✓Small enough to know every child; staff attentive to individual needs
✓Traditional solid foundations in core academics without excessive pressure
Common concerns
!Limited co-curricular facilities and specialist staff compared to larger independents; no on-site sport/music infrastructure evident