The graduating class of 1978 consisting of 70 members received their diplomas on Sunday, June 4.
St. Mary's Graduating Class Roster of 1978
| Agee, Daniel G. |
| Andrews, Steven T |
| Beachnau, Karen A. |
| Binggeser, Thomas F |
| Birg, Lynda M. |
| Borowiak, Darold E. |
| Borowiak, Joseph M. |
| Butka, Patricia K. |
| Champine, Michelle D. |
| Cherry, Joel |
| Comella, Karen M. |
| Crawford, Juliet A. |
| Dobrzelewski, Lori A. |
| Dos Santos, Marie Ribiero |
| Dreyer, Barbara J. |
| Duhoski, Audrey D. |
| Ford, Michael W. |
| Francis, Rose Ann |
| Gapinski, Dennis M. |
| Gardner, Christine A. |
| Haske, Brian K. |
| Jacobus, Luiz A. |
| Jasinski, Duane M. |
| Jurek, Monica S. |
| Kirt, Donald T. |
| Kosiara, Dave E. |
| Kozlowski, Merri Ann |
| Kubacki, Patricia K. |
| Kucharek, Deborah L. |
| Kucharek, Michalina J. |
| Latuszek, Dennis M. |
| Lawnichak, Michael C. |
| Lewandowski, Wolfgang J. |
| Lyk, Edward P. |
| Mackowiak, Alan E. |
| Manuszak, Robert G. |
| Manuszak, Richard G. |
| Martin, Uwe H. |
| Martin, Michelle M. |
| Matelski, Linda L. |
| Matelski, Lora L. |
| Matelski, Cynthia M. |
| Meyer, Teresa R. |
| Muzyl, Cheryl A. |
| Nowak, Marlene K. |
| Osantowski, Martin W. |
| Pandell, Roberta L. |
| Purgiel, Debra L |
| Raselli, Adolfo E. |
| Richards, Kevin S. |
| Rider, Laura A. |
| Robb, Julie A. |
| Skop, Geri Ann |
| Slesinski, Robert A. |
| Slivinski, Daniel L. |
| Smith, Joseph G. |
| Smith, William A. |
| Stutesman, Jeffrey A. |
| Tholl, Margaret M. |
| Tobin, Jonna M. |
| Tomaski, Barbara J. |
| Tomaski, Janet K. |
| Tomaski, Brian D. |
| Valentin, Joseph C. |
| Valentin, Jon A. |
| Vinicki, Mary A. |
| Walsh, Michael F. |
| Welsh, Laurie A. |
| Woodcock, Lynne D. |
| Zaremba, James R. |