The International School at Dundee serves a student population of about 370 students, which is comprised of two-thirds redistricted students and one-third choice students.
The school is part of the Greenwich Public School system and as a result any student in the system may apply to ISD, but priority is given to those students who live in areas that feed into Eastern Middle School.
The school serves students from kindergarten through fifth grade and teaches the International Baccalaureate Primary Years Program.