Commencement ceremonies held for the Gibbon Class of 2018 Wed, 05/16/2018 - 12:52pm Commencement ceremonies for forty-five members of the Gibbon High Class of 2018 on Saturday afternoon, May 12. Gibbon Board of ...PLEASE LOG IN FOR PREMIUM CONTENT. Our website requires visitors to log in to view the best local news. Not yet a subscriber? Subscribe today! Read more about Commencement ceremonies held for the Gibbon Class of 2018