The number of Jewish children in Jewish schools in the UK has almost doubled since the mid-1990s, rising from 16,700 then to over 30,000 now, while the number of Jewish schools has jumped from 62 to 139 over the same period. This report is the first in a series of studies being produced by the new partnership between the Board of Deputies of British Jews and the Institute for Jewish Policy Research, cooperating on the collection, analysis and publication of key community statistics. The results of the study show that the majority of the 30,900 Jewish children studying in Jewish schools in 2014/15 were in haredi schools (17,500, or 57%), whilst the remainder (13,400, or 43%) were in mainstream schools. Twenty years ago, the equivalent proportions were 45% strictly Orthodox, 55% mainstream. The shifting balance provides further evidence of the changing composition of the British Jewish community.