Eight students from Nduru Boys High School Kisii were on Monday afternoon charged at the Ogembo Law Court.
The eight were arrested late last week by detectives from Nyamarambe Police station in South Mugirango.
They were in possession of petrol and are alleged to have planned to burn the school Thursday last week.
They were released on Sh150,000 bail or a bond of Sh200,000.
Tuesday afternoon police also arrested one student from Nyangwenta SDA Secondary after a dormitory was razed down in the institution Monday night.
The arrested student and his accomplice are alleged to have burnt a dormitory with a holding capacity of 160 students.
The accomplice had been sent home from school last week and only sneaked back to school on Monday night, burnt the dormitory and left.
Police are already trailing the said student.
Three days ago, another dormitory was razed down at Nyamagwa Secondary School though police are yet to arrest suspects involved in the arson.
Kisii County Commander Jebel Munene says all students arrested will be taken to court. "We are not going to take sides; they will face the law."