The injured have been hospitalised. No one is said to be in serious condition.
The accident took place by around 8 pm when the school bus of Chinthalaya Vidyalayam, Kallikkadu and a private bus running for Therumoodu AKLM School collided.
The police said that the private bus was moving at a dangerous speed and this led to the mishap.
It was on last Friday that five students were killed and six others injured when a big tree fell on their school bus near Kothamangalam.