A wonderful group of Alumni made a Facebook page to display yearbooks.
Yearbook archive for Coatesville High School in Coatesville, Pennsylvania
Click on the graduation year that interests you in the "topics" section - you'll see all albums and posts related to that year. If we don't have a year listed, we don't have their yearbook uploaded yet.
You can also go to Photos, then Albums to look at the photo albums for each yearbook available.