- The school was formed in 1971, when St Peter’s boys’ school merged with the Merrow Grange convent school for girls.
- It occupies the original site of St Peter’s, which was founded in 1947 by Archbishop Peter Amigo.
- The St Hilda’s sixth-form building opened in 2022 and expanded in 2024 with a second block and covered outside area.
- The school is part of the Xavier Catholic Education Trust, which includes Salesian School in Chertsey and St John the Baptist School in Woking.
- The former Strictly Come Dancing professional dancer Flavia Cacace studied here.
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