David Cameron has said it would be wrong to use a highly critical Ofsted report of a free school in Derby as a "stick to beat the whole free school movement".
Speaking to BBC Radio Derby, Mr Cameron said:
"Let's not use this as a stick with which to beat the whole free school movement, because actually there are now hundreds of schools in our country that are set up as free schools and on average they have more outstanding ratings and more good ratings than established schools.
"So they are good things but when it goes wrong - just as when a state school goes wrong - you've got to get in there, sort it out or close it down."
More top news
163,000 French and 143,000 German soldiers were killed in the 10-month battle in 1916.
The fire broke out on Sunday morning at the home for 35 residents in Litochki, a village 25 miles north of Kiev.