eng Science and Education Publishing American Journal of Educational Research 2327-6150 2015-09-16 3 10 1208 1215 10.12691/education-3-10-1 EDUCATION20153101 article William E. Stone ws03@txstate.edu 1 School of Criminal Justice, Texas State University San Marcos, Texas, USA The study reports the results of an attempt to predict enrollment for a newly proposed doctoral program in criminology/criminal justice. The methodology used to create the enrollment projection was a differential equation utilizing a combination of survey data and existing archival data. The study compares the projection results to the first five years of actual enrollment in the program to validate the projection. While the enrollment projection was somewhat off in the first two years, in years three through five the projection was very successful. While this study focuses on a specific program, the methodology was successful and should be applicable to predicting enrollment in a wide range of programs where preexisting populations are not available to form a projection base. http://pubs.sciepub.com/education/3/10/1/education-3-10-1.pdf population projection doctoral programs program justification