According to fire officials, Los Angeles Unified School District elementary school students were among the 60 people who received medical attention on Tuesday.
At a news conference, Superintendent Austin Beutner said operations were "back to normal."
"Schools clean, students are safe, staff are safe," he told reporters. "As we mentioned, we'll continue to monitor and we'll continue to work with our school community to make sure that if there are any lingering effects we'll deal with those."
MORE: 60 people treated after Delta plane dumps fuel near schools while approaching LAX
The Delta airliner, initially bound for Shanghai, dumped thousands of gallons of jet fuel on neighborhoods east of LAX after the flight experienced engine trouble following takeoff.
Hazmat crews used power-washers on potentially contaminated playgrounds, benches and water fountains at Park Avenue Elementary School.
Of the 60 students and staff who were treated for minor injuries, none were hospitalized.