The existence of polluting industries near schools does not lead to a decrease in the air quality at those schools  Proof of this is shown at middle school X in southern California, where an oil well was built on middle school X' s campus
The air quality at middle school X is no worse than the air quality at other middle schools in the state, and the students at middle school X do not suffer more frequently from air pollution-related allergies than do students in other middle schools in the state
More animal and plant life thrive near middle school X than at other middle schools in the state.