(309) 691-8741
309-691-8741 ext. 3363

Roger Callahan

Math Teacher

Favorite Quote: “Oh what a tangled web we weave when first we practice to deceive.”


A native of Galesburg, IL, Dr. Callahan — affectionately known as Doc — has taught at PND since 2004 with some of his favorite parts of the school being the effort from the students, parental support, and the emphasis on religion and family. He has developed in his own faith viewing the importance of family support in the PND community. When not in freshman hall, Doc can be found reading historical non-fiction and following sports. He has even met and received autographs from Muhammad Ali and Howard Cosell!


  • Doctor of Philosophy, University of Denver
  • Master of Science, Western Illinois University
  • Bachelor of Science, Eastern Illinois University

About Mr. Callahan

  • Employed at PND in 2004
  • Started Teaching in 1999