Form Four students at Oloolaiser High school in Kajiado County went on rampage on Thursday night, destroying school property.
Following the unrest, 19 students were arrested and taken to Ngong Police Station where they recorded statements.
However, they were freed to allow them continue with ongoing Kenya Certificate of Secondary Educations exams.
They are expected to be arraigned in court once police are done with investigation.
Rift Valley Regional education coordinator Mary Gaturu confirmed the incident.
"Arrangements have been made for them to continue with exams," said Rift Valley Regional Coordinator Mary Gaturu, who confirmed the incident.
The cause of the unrest has not yet been established.