Aim: To check for Periodontal Treatment needs in school children of suburban Mumbai. Objective: To evaluate the Gingival disease in school children in suburban Mumbai. Materials and Methods: The data was collected from 409 students screened for signs of gingivitis in the age group of 10-18 in a private school in suburban Mumbai. All the children were otherwise healthy and had no signs of any other disease. Each student was checked for presence of dental caries, gingival inflammation and presence of malocclusion. A report was generated on the dental health requirements of each child and with information on tooth-brushing. Results: 409 children were examined out of which 390 had need for basic Periodontal Therapy and 19 were healthy with no sign of gingivitis or periodontal disease. In terms of oral hygiene maintenance out of 409 - 38 (9.3%) brushed twice daily and 371 (90.7%) brushed once. All the children brushed their teeth using toothbrush and toothpaste. Conclusion: According to this study the prevalence of gingivitis is 95% therefore a sustained awareness and treatment campaign should be considered.