Mathilda-Marks Kennedy, Simon Marks and Rosh Pinah already operate with a similar religious ethos to US schools as they are under the authority of the Chief Rabbi.
The tie-up with the US will make no difference to their admissions policies.
Stephen Pack, US president, said he was excited by the “fantastic addition to the US family. Education is a key priority for the US.”
Peter Ohrenstein, Scopus chairman, said “the US expertise and resources will ensure the continuity of an excellent Jewish education for future generations”.