The word "torched" is correct and can be used in written English.
It may be used to refer to something that has been burned or charred due to intense heat. For example, "The house was completely torched in the fire."
More than 300 classrooms have been torched in the remote, arid state since 2009, according to official counts.
As Ulster loyalists torched offices belonging to the non-sectarian Alliance party, bombarded police with missiles and bottles and threatened to turn Belfast City Hall into a slaughterhouse this week they were oblivious to an apposite event occurring south of the Irish border.
Municipal policeman Onesimo Rojas said masked protesters torched ballot boxes in at least eight places in the city.
Then came the riots of summer 2011, in which Enfield shops were looted and the Sony warehouse torched.
In Kinshasa, hundreds of protesters torched a town hall, while several inmates escaped from a prison and looters made off with police weapons.
Seven villagers in the far north of Cameroon were killed on Tuesday when they fought back against Boko Haram fighters who stole 70 cows and torched houses in Gaboua.
The attacks left seven dead and thousands displaced on the streets of South Africa's cities, shops were looted and torched, and South Africa's " rainbow nation" was thoroughly shaken: "The fabric of the nation is splitting at the seams," the Desmond and Leah Tutu Legacy Foundation said last week.
After the American ambassador's death, protesters drove Ansar al-Sharia, an Islamist militia which had torched a Coptic church, out of Benghazi's main hospital, al-Jala.
And at the outset of the second intifada in 2000, Palestinian militants torched Joseph's tomb in the West Bank town of Nablus and painted its dome green, for Islam.
Ferguson, Missouri, torched by its residents following the police shooting of an unarmed black teenager, epitomises the failure of many American suburbs.
A number of cars were torched on Monday night in Brussels, the Belgian capital.The French government has seemed at times to be at a loss over how to react to the violence, which is arguably the most serious challenge to its authority since the student riots that rocked Paris in 1968.
