Chronic kidney disease (CKD) poses enormous problem to a child’s growth and development and its prevalence is steadily on the increase, emerging as a major public health problem. Obesity, hypertension, proteinuria and microalbuminuria have been identified as the four leading modifiable risk factors for CKD among children. This study was aimed at determining the prevalence of some of the modifiable risk factors for CKD (obesity, hypertension, proteinuria and microalbuminuria) among primary school children in Asaba and to determine the relationship between socio-economic status (SES) and these modifiable risk factors. The study also aimed at determining if there was any difference between these modifiable risk factors with the school type (public and private school) the students attend. The study was a descriptive cross-sectional study conducted among primary school children in public and private schools in Asaba. A multi-stage stratified random sampling method was used for the subject selection. Data were collected using a pre-tested questionnaire and case record forms. Anthropometric measurements (weight, height and BMI) and blood pressure recordings were done using standardized methods. Proteinuria and microalbuminuria were assessed using the first morning urine sample of the subjects using Multistix Combi 11 strip and microalbuminuria strips (Micra-test strips) respectively. Four hundred school aged children between 5 and 16 years in public and private schools in Asaba were studied. The prevalence of hypertension, obesity, proteinuria and microalbuminuria in this study were 3.9%, 9.8%, 17.3% and 18.6% respectively. Obesity and proteinuria were more prevalent among pupils drawn from high SE class and among pupils that attend private schools (p < 0.05). One in every ten pupils in Asaba is obese, while one in every five pupils have proteinuria and microalbuminaemia.