One of the parents outside Rhws Primary School this morning told ITV News: "You just feel lucky it wasn't you."
Martin Rauch said the Rhoose collision occurred on the same route his family walks to the school.
"We go down that side of the road," he said.
"We cross at that crossing, with that lollipop lady. It could easily have been us."
He added that the community was in 'a state of shock'.
Five adults and four children have been taken to hospital with injuries.
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Roads have been closed and cars were left stranded after heavy snowfall overnight made roads impassable.
Parts of Wales will see heavy rain today, with strong winds and sunny spells! Feeling chilly throughout!
Rain will push in to the south overnight and quickly turn to snow over the Brecon Beacons. Frosty under clear skies elsewhere!