Haas says a 17-year-old student received the most serious injury, a broken collarbone. Two other students had arm injuries.
Nashville Police spokesman Don Aaron says 43 students were on the bus, along with two chaperones and the driver. The bus was on its way to a convention of the Beta Club, an academic and community service organization, at the Gaylord Opryland Resort in Nashville.
Aaron says the bus has been in service for a year.