A state-aided strictly Orthodox primary school has split into two after being told by Ofsted it was unlawful to segregate girls and boys.

Yesoiday Hatorah in Salford divided into two single-sex schools in August following the Ofsted visit at the end of last year.

However, inspectors, who returned to the school just before the end of the summer term in July, shortly before the de-merger, have issued a fresh report noting that “unlawful segregation” had continued during the year.

As a result, they graded the school overall as one that “requires improvement” though the quality of teaching, development of pupils and educational attainment was found to be good.

“Boys and girls have a limited number of opportunities where they can mix if they choose to do so,” said the report, published this week.

The school, which was one of the largest primaries in the country with 907 children on its roll, has now split into two schools under the umbrella of one multi-academy trust. The move follows an Appeal Court ruling two years ago against a Muslim school which kept boys and girls separate.

As a result of the ruling, Hasmonean High School in London — which had taught boys and girls on different sites — similarly divided into two separate schools under one multi-academy trust.

Other Jewish schools have been affected, most notably King David High School Manchester which was downgraded by Ofsted from outstanding to inadequate this summer.

Inspectors objected to the current arrangements for King David’s Yavneh single-sex religious streams, even though there is scope for pupils to take classes together with the general, co-educational section of the school.

King David has indicated it will challenge the finding.