Clean Environment is a major component of life. Our environment is polluted day by day. Lahore, the city of gardens, is on the top list of polluted cities. Heavy metals are among the most harmful environmental pollutants due to their widespread use. They are one of the reasons of atmospheric pollution. In order to access the heavy metals detection, different government schools of Shalimar town, Lahore were selected.  In this study, heavy metals (chromium, zinc, lead) were detected from dust samples collected from four Govt. schools of Shalimar town. Results shows that all school have higher conc. of zinc 334 mg/kg exceeding the NEQS standards. Lead shows slightly higher values 0.67mg/kg exceeding the NEQS standards. Chromium shows values 0.30 mg/kg. Chromium values are below the exceeding levels of NEQS.  It is concluded that reason of zinc conc. was higher because of traffic related pollution and may be due to the improper disposal of wastes, manure sewage and sludge at school sites.