Complex sentence: Catasauqua High School is a public high school serving grades nine through 12 in Northampton, Pennsylvania, in the Lehigh Valley region of eastern Pennsylvania, in the United States.
Split into simpler sentences: Catasauqua High School is a public high school serving grades nine through 12. The school is located in Northampton, Pennsylvania, in the Lehigh Valley region of eastern Pennsylvania, in the United States.