Wicked Local Newton posted these photos with this explanation.

A resident sent in photos taken earlier this week of the campus of Newton South High School, clippings from recently mowed grass either still in place or having been blown to the street or sidewalk. The city’s updated leaf blower law, which went into effect earlier this year, prohibits the use of gas-powered leaf blowers in the summer. Electric or battery-powered blowers are allowed, but apparently the city’s contractor did not use them to clean the debris.