Complex sentence: On the track team, all students compete against other schools in the city, at the City of Atwater Elementary School Track and Field meet and a few students get to compete against other schools in the county at the Kiwanis Junior Olymics.
Split into simpler sentences: On the track team, all students compete against other schools in the city at the City of Atwater Elementary School Track and Field meet. A few students get to compete against other schools in the county at the Kiwanis Junior Olymics.