Pupils of Beit Shvidler Primary School (formerly Edgware Jewish Primary) saw their modern premises for the first time on Monday following a £5 million rebuilding project.
The renaming is in recognition of the generosity of Eugene Shvidler, a Russian oil billionaire who is a close associate of Roman Abramovich.
Governors' chair Eddy Breuer-Weil observed that "Beit Shvidler is a part of the JSSM movement and the family of Hasmonean schools that has benefited the Jewish community of London for the past 70 years and more.
"It is now also a part of the family of Beit Shvidler projects in Moscow, Ufa, New York, Jerusalem and now here in Edgware."
The 20,000 sq ft building was "state-of-the-art in every respect" and had been designed in consultation with the governors and senior staff.
Features include a science and technology room, an ecological zone for nature studies and areas for smaller group learning.
There are interactive white boards and computers in every Beit Shvidler classroom.