The Cathedral School of St Mary

Primary
Academy
Ages 4 to 11

Ofsted judgements: Good to outstanding

Cecil Street, Stonehouse, Plymouth, PL1 5HWOpen in maps (opens in a new tab)

The Cathedral School of St Mary is a primary school in Plymouth for ages 4 to 11. It is one of the 103 schools in Plymouth. It ranks 54th of 71 primary schools in Plymouth. Its latest Ofsted inspection, in April 2025, graded each key judgement and gave no overall Ofsted rating.

Ofsted inspection

Inspected 29 April 2025, report published 9 June 2025

This inspection graded each key judgement and gave no overall effectiveness grade.

Quality of education: Good
Behaviour and attitudes: Good
Personal development: Outstanding
Leadership and management: Good
Early years provision: Good
Safeguarding: Met

Read the full Ofsted report (opens in a new tab)

Exam results

SATs results (key stage 2), 2024/25

15 pupils took the tests

Expected standard in reading, writing and maths47%

47%, 15 percentage points below the England average of 62%.

Higher standard in reading, writing and maths7%

7%, 1 percentage points below the England average of 8%.

Reading, average scaled score100

100, 6 below the England average of 106.

Maths, average scaled score98

98, 7 below the England average of 105.

Grammar, punctuation and spelling, average scaled score100

100, 5 below the England average of 105.

Pupil numbers and mix

102 pupils on roll, with places for 119

Eligible for free school meals52%

52%, 25.5 percentage points above the England average of 26.5%.

English as an additional language27.5%

27.5%, 5.9 percentage points above the England average of 21.6%.

Special educational needs support17.6%

17.6%, 2.8 percentage points above the England average of 14.8%.

Education, health and care plan8.8%

8.8%, 2.8 percentage points above the England average of 6%.

Schools near The Cathedral School of St Mary

School	Distance	Ofsted	Results
St Peter's CofE Primary School	0.2 miles	Ofsted: Good	67% met the expected standard
Pilgrim Primary Academy	0.2 miles	Ofsted judgements: Good to outstanding	70% met the expected standard
Stuart Road Primary Academy	0.4 miles	Report card: Expected standard to strong standard	67% met the expected standard
St Andrew's Cof E VA Primary School	0.4 miles	Ofsted: Good	73% met the expected standard
High Street Primary Academy	0.5 miles	Ofsted: Good	63% met the expected standard

School details

School type: Academy converter
Sector: Academy
Trust: PLYMOUTH CAST
Age range: 4 to 11
Gender: Mixed
Religious character: Roman Catholic
Nursery classes: No
Headteacher: Mrs Roisin Wright
Phone: 01752265270
Website: csosm.org.uk (opens in a new tab)
Address: Cecil Street, Stonehouse, Plymouth, PL1 5HW
Local authority: Plymouth
URN: 140785

School details from Get Information about Schools, 17 September 2026. Ofsted outcomes published to 31 August 2026. Exam results for 2024/25 from the Department for Education. Pupil mix from the school census, 2025/26.