Participants are determined annually by a Selection Committee. The Directors of both National and BLESTO scouting services, which combined represent twenty-five NFL teams, are joined by members of various NFL player personnel departments to form the committee. The participating NFL executives can rotate on a yearly basis, and remain anonymous. ALL eligible players are reviewed and voted on by the committee members. Each athlete receiving the necessary number of votes, by position, is then extended an invitation. While it is not a perfect science, the goal of the committee is to invite every player that will be drafted in the ensuing NFL Draft.
Not sure how PR from CPR is going to make a difference when the players graduating don't have the talent level to get drafted. Reality we had two guys who deserve to be drafted and a couple long shot free agent signings that may have a shot at a practice squad and are very unlikely to make an NFL non practice squad roster.
ISU has more talent in the Freshman - Junior classes and I am sure we will see a corresponding increase in combine invites. For most schools outside the top 10, 2-4 invites is pretty normal.
When you look at the list of invites you also notice the team that does the invites does a pretty good job of identifying kids likely to be drafted regardless of school. This years invites include, Troy, PRESBYTERIAN, LOUISIANA-LAFAYETTE, NEVADA, SMU, TENNESSEE TECH, TENNESSEE-CHATT, SOUTH DAKOTA, NORTH DAKOTA, RICHMOND... and that's just players with last names ending in A, B or C.
THese guys job is to find players and they look everywhere. Want more combine invites...get more NFL talent into ISU.