School zones in Kogarah, Ryde and Chester Hill are some of the most dangerous in the state, with more than 5000 traffic infringements issued in each in the 12 months to June.
The worst, which is along the Princes Highway in Kogarah near Kogarah Public and Kogarah High schools, James Cook Boys High School, Moorefield Girls High School, St George Girls High School, St George Hospital School and St George School, recorded 6418 infringements in 2016-17.
This was closely followed by Ryde along Victoria Road, near Holy Cross College and St Charles Catholic Primary School, which recorded 5726 infringements in the last financial year, the latest figures from Revenue NSW show.
Other dangerous zones include Woodville Road in Chester Hill near Old Guildford Public School, which recorded 5061 infringements, and the Pacific Highway in Lindfield near Lindfield Primary School, which recorded 4480 offences.
A total of more than 143,600 fines were issued in 2016-17 in school zones with fixed cameras, generating more than $39.3 million for the state government.
Of these, 111,100 fines were for speeding offences, 28,300 were for parking infringements in school zones, 693 were for mobile phone use and 457 were for jumping a red light.
A total of 13 children between the ages of 5 and 16 were killed on NSW roads in 2016 and 863 were injured, with 267 suffering serious injuries and another 317 suffering moderate injuries, according to the NSW Centre for Road Safety.