City Sports League is an in-house league organized by City Sports School. It is contested in four different sports: football, basketball, athletics, and swimming, across nine centres within Lagos.

Talented children from ages 4-19 categorized by age-grade and development levels come together to engage in healthy competition amongst themselves. Sometimes we open our league to participants who are not students of our school to take part in the league affording them the benefits of standardised competition and testing.

Since its first edition in 2017, City Sports League remains one of the most competitive leagues in the country for young kids, and with every edition over the past five years it has continued to grow bigger and better. The league boasts of up to 10 different competitions which usually last a duration of 4 to 8 weeks. It is widely contested by more than 450 athletes competing at a high level displaying their talents for the world to see.

The purpose of the CSL is to stage a very competitive and compelling league to serve as a breeding ground for talented athletes where our core values of discipline, integrity, excellence, teamwork, perseverance, and courage are instilled in every one of them and portrayed in every aspect across all development levels giving these athletes the opportunity to learn life-long leadership skills through sports.