The St. Christopher School Academy Trust is an SEN Specialist School for Communication and Interaction with a recognised admission number of 212 pupils. Children in the primary department are aged 3-11 with a range of learning needs, including communication and interaction difficulties, cognition and learning difficulties, autism and some with social emotional and behavioural difficulties. The school is also designated to cater where appropriate for Key Stage 3 pupils (age range 11-14) and Key Stage 4 pupils (age range 14-16) who have severe Autism and/or ADHD. The school also caters for a small number of young people aged 16-19 who have Autistic Spectrum Disorders and/or ADHD.
On the 1st September 2017, The St. Christopher School along with the three other special schools in Southend-on-Sea (Kingsdown School, Lancaster School and St. Nicholas School) formed a Multi Academy Trust, SEN Trust Southend.