Police said a traffic incident in which five children and four adults were injured outside a primary school in Rhoose, South Wales, was not believed to be deliberate.
"At this stage the collision is not believed to be a deliberate act," South Wales Police said in a statement.
More top news
Union leaders and officials from a range of campaign groups will address demonstrators as Conservative party conference gets under way.
Teachers union says workload, pay and low morale drive educators away from the profession.
Prime minister says he will 'beef up' special force and boost the use of drones in fight against terror group.