Helping hands and changing hearts: Corban students and staff serve on MLK Day January 17, 2012 By Kate Tracy MLK Service DayJanuary 16, 2012 ◄ Back Next ► Picture 3 of 17 Caulking, however hard to pronounce, is a very important step in building a house, as this student demonstrates during Corban's all-campus service day on January 16, 2012 (Photo by Sheldon Travers).