Late Wednesday, the district said all students and staff that were sent to hospitals have been released.
"Injuries sustained from the incident ended up being minor bumps and bruises," a post on Facebook said.
The accident happened inbound on the highway at Fairbanks N. Houston Road, where the students were on the way to Houston for a class field trip to the museum.
The district said that fifth grade students from John C. Webb Elementary were on the buses at the time, when a CenterPoint Energy work truck rear-ended one of them, causing one bus to collide with the other in front of it.
SkyEye was over the scene where the buses were pulled over along with emergency crews.
School bus involved in accident on 290
A spare bus arrived to the scene to take students back to Navasota.
First responders unload students from bus