- Cass Lake High School Class of 1978 20 years and still counting! Welcome To the Cass Lake High School Class of 1978 Website! Please take a moment to sign our guest book on your way through these pages, as we would like to know how many alumni have seen these pages. If you have any updates, additions or corrections, please let us know. We wish that this website will keep up in better contact with ...www.angelfire.com/mn/CLHS78Reunion/index.html