Oral health is an integral part of general health. Dental problems can be avoided if identified at an early stage. There is no data on oral health status of school going children in Karnataka state's Shimoga city.To evaluate oral health status of school going children among 5-15-year-old in Shimoga city.A cross-sectional study was conducted among 1458 government and private school children aged 5-6, 9-10 and 14-15 years. Dental caries (DMFT and deft Index), oral hygiene status (OHI-S Index) and dental fluorosis (Dean's Fluorosis Index) according to WHO diagnostic criteria (1997) were assessed. Data was evaluated using ANOVA and t-test by SPSS (IBM statistical software version 21.0.) at a level of 5% significance.The deft among 5-6-year-old children was 3.36±3.511, deft and DMFT among 9-10-year-old was 2.55±2.497 and 0.45±0.996 respectively and DMFT among 14-15-year-old was 1.34±1.832. The caries prevalence among 5-6-year-old was 68.8%, 9-10-year-old was 77.2% and 14-15-year-old was 48.9% and overall prevalence of dental caries was 65.3% which was statistically significant. Among 9-10-year-old oral hygiene was good in 85.4%, fair in 13.5% and poor in 1% of school children and among 14-15-year-old oral hygiene was good in 77.4%, fair in 22.2% and poor in 0.4%. Overall 81.7% of children had good oral hygiene. The prevalence of dental fluorosis was 14.5%.The children from government school were found to be less caries free than the private school children, but the difference was not significant. Oral hygiene status is found to be good among both the private and government school children. So the dental awareness is required among children of government school.