Complex sentence: The smaller Wahtonka building-now known as the West/Wahtonka Campus-houses the freshman students and is also the location of the TDW's track, football and soccer fields; the East Campus, formerly The Dalles High School, houses grades 10--12.
Split into simpler sentences: The smaller Wahtonka building-now known as the West/Wahtonka Campus-houses the freshman students and is also the location of the TDW's track, football and soccer fields. The East campus, formerly The Dalles High School, houses grades 10--12.