The present study was conducted to find out the effectiveness of Parent Teachers' Association (PTA) in Islamabad Capital Territory. Sample of 50 Schools was selected through stratified random sampling technique from 102 Federal Government Secondary Schools of Islamabad Capital Territory. Ten secondary schools (5 male, 5 female) were selected from each area under the control of five education officers (AEOs). From each sample school, General Secretary (a teacher) and President (a parent) of PTAs executive body were taken as the respondents of the study. Data were collected from General Secretaries through self structured questionnaire while structured interview technique was applied to collect data from Presidents of PTAs. It was found that overall role of PTA is positive for promoting quality education in Islamabad. Although it has some negative effects also, as involvement of politics in schools yet it has showed good performance in helping the management of school. It is recommended that PTAs should be strengthened by training the executive body of PTAs and by constituting condition of matriculation for members of executive body of PTAs.