Army Times has an interesting story here which in summary addresses the valid concerns of the TRADOC commander, about the present backlog in professional training (schoolhouse) primarily for junior and mid-grade officers (LT-MAJ).
The situation is that because of the demands and frequency of unit deployments, many officers are staying in command and staff (S-3 and XO) positions longer than before, and are not able to attend professional training as in the past. Given that they are staying longer in these positions, means fewer other officers pass through those critical assignments. TRADOC wants to determine what this all means as far as future impact on the Army.