Complaints to Ofsted about schools rose by a quarter last year, but more than two-thirds were deemed to not warrant further investigation.
Ofsted received 14,900 complaints about schools this year, its annual report and accounts published on Tuesday show.
It comes amid reports from schools that they themselves are facing a rise in parental complaints post Covid.
Writing for Schools Week, Ofsted’s national director for education, Chris Russell, said this marked an almost 25% increase on the previous year, when 12,000 complaints were made.