The Catholic Education Service, which promotes Catholic Education in England and Wales, works closely with the Department for Catholic Education and Formation. It advises the Bishops on matters of education and coordinates with national Catholic bodies to popularize the catechetical policies of the Bishops' Conference. The CES also collaborates with the Church of England's Board of Education and with the Free Churches' Council to support and advance Christian interests in education.

Catholic schools all over the world are either independent or voluntary aided schools. Hertfordshire falls under the purview of the Archdiocese of Westminster. The Diocese covers a huge diverse area to the north of the River Thames and west of the River Lea and works in partnership with 19 local education authorities: City of Westminster, Brent, Barnet, Camden, City of London, Enfield, Ealing, Hackney, Hammersmith and Fulham, Haringey, Hertfordshire, Harrow, Hillingdon, Hounslow, Islington, Kensington and Richmond, Chelsea, Surrey and Tower Hamlets.

The Archdiocese looks after the following schools in its jurisdiction:

161 Primary
40 Secondary
26th Form Colleges
18 Independent
2 non-maintained Special

The achievement levels of pupils at Key Stages 1, 2, 3, and 4 in the Catholic schools, when compared with other maintained schools are above national norms while achievement levels at 18 remain slightly below national figures. This difference is usually attributed to the more inclusive entry policies followed by many Catholic 11-18 schools.

Each diocesan office supplements its in-service programmes by providing customized training to teachers. The teachers train for the Catholic Certificate of Religious Education (CCRS), they attend induction programmes on the precise role of classroom RE, and they are also given management training that focuses specifically on the needs of Catholic schools.

Although it is common for Catholic schools to require non-Catholic students to attend Catholic religion classes and various religious exercises of the school, they rarely demand that a student must be Catholic to attend a Catholic school.