As a group of shocked parents looked on in horror, a Queens woman was run over this morning after she had accompanied her son to school, authorities said.

The woman, who was not identified, was crossing the intersection of 202nd Street and 53rd Avenue in Bayside at about 8:45 a.m. when she was struck.

“The crossing guard was screaming, ‘Stop! Stop! Stop!’ but the vehicle just flew by and struck her,” said witness Celeste Estrada, 44.

Police said the woman had just dropped off her 5-year-old son at nearby PS 162.

“She went airborne, then he ran her over,” said Estrada, who called 911. “She flew [into the air], then you heard a thump.”

The woman was taken to New York Hospital/Queens in critical condition with a head wound.

The 51-year-old driver, who was not immediately identified by police, was arrested for driving with a suspended license.

“I can’t believe this. It’s horrible. This is so upsetting,” said Estrada.