School buses were involved in three crashes in the city Thursday morning, including one involving injuries. Ambulances took four children to Riley Hospital for Children after an Indianapolis Public Schools bus was involved in a crash at about 8 a.m. on the northeast side. The students suffered what are believed to be minor head injuries. A Pike Township bus carrying two students collided with a car on the northwest side, and another IPS bus crashed on the northeast side. No injuries were reported in those crashes.