A pedestrian became trapped between two cars in the carpark near the IGA in Springwood last week.
Blue Mountains Police Detective Inspector Scott McAlpine said a 72-year-old female driver from Springwood had hit the rear of parked vehicle on May 8, which had moved the vehicle, trapping a pedestrian between the two vehicles.
"Police Rescue attended and released the victim before she was assessed by paramedics for minor soreness. She was conveyed to hospital for observation," he said.
The NSW Teachers Federation said it was happy with how Katoomba High School was handling a "nasty situation" following the assault of a teacher last month.
Pat Donohoe, the teachers' union's Blue Mountains rep, said the teachers were being supported and the union was "working with the school to make sure students and teachers are safe."
"It was a nasty situation. We're happy with how the school is handling the situation," Mr Donohoe said.
A 44-year-old Wentworth Falls man was placed on a two-year community corrections order after repeatedly punching the teacher at the school.
Det Insp McAlpine said the man was the father of a student at the school who did not like the way his child was placed in 'time out' by a teacher, due to a previous incident.
The parent has been banned from school grounds.
A NSW Education Department spokesman said "The school supports parental engagement in students' learning, including appropriate face-to-face contact with teachers, and expects parents to comply with the school community charter."
"The school has outstanding relations with its community, growing from 522 to 922 students in seven years, and has experienced no other parental violence in that time," he said.
Det Insp McAlpine said there had been one other incidence of violence against teachers in Blue Mountains schools in the past two years, involving a student, that had been reported to Blue Mountains police.
Two replica guns resembling military assault rifles have been found at a Lawson home, and the owner charged with possessing an unauthorised firearm.
Blue Mountains police served a Firearms Prohibition Order on the 47-year-old Lawson woman on May 9, and searched the home finding the two replica rifles.
Det Insp McAlpine said the rifles had working parts, magazines, triggers and use gel pellets for ammunition.
The woman will appear at Katoomba Local Court on May 27.