The house system at Cathedral Vidya School Lonavala (Residential School Mumbai) is of great importance to school life. Its function is to encourage healthy competition within school and to give all the girls and boys the opportunity to participate in representative sport, music and other activities. It aims to promote the school ethos of raising self-esteem, developing self-confidence and giving opportunities for leadership and teamwork, beyond those already available within school. It also fosters a sense of belongingness and a supportive interaction with boys and girls from other year levels.
Each house is unique for their own strengths and talents. The four houses have been named after successful school headmasters and governors of Cathedral and John Connon School.
The house system unites the different grade levels under one banner and the students participate for their house in activities, such as the athletics, swimming Sports, carnivals, etc. There is keen, but good-natured rivalry between the four Houses to see who will win the coveted house shield each year. Students accumulate points from the various sporting and cultural competitions that are held throughout the year. The house shield is awarded at the Annual Sports Day to the House who acquires maximum points throughout the year as a result of their participation in these activities.