Uganda's government has suspended all school trips in the wake of Thursday evening's bus crash that killed at least 20 pupils and one adult who were taking part in an educational tour.
Dozens of others, including staff, were injured in the accident in Kapchorwa district, eastern Uganda.
Preliminary investigations suggest the bus had a mechanical fault before the driver lost control on Chekwatit Hill, a stretch of road that has been the site of several serious crashes, according to local officials.