Costeas Geitonas School (CGS) is one of the largest private schools in Greece with approximately 1.200 students from 3 to 18 years old. The school is open and accessible to children and their families from the wider area of Attica, which represents a population with diverse backgrounds. The majority of the student body and staff is comprised of Greek nationals. However, the ethnic and cultural backgrounds of many families are diverse in the sense that some students are dual passport holders but there is an emerging international student and staff population.
CGS is an IB international school and offers a robust educational programme to students of all ages. Technology is a core part of teaching, as teachers and students often use computers, tablets, specialized educational software and simulations across subjects, whilst during the last year, the school has acquired a 3D printer and a meteorological station. CGS is also known for its emphasis on STEM education (CGS STEM Academy), sport (Elite Athlete Programme), Arts, and its sensitivity for students with special needs at either side of the spectrum (differentiated teaching for students with dyslexia and CGS Academia for students with higher learning motivation).