If there are slots open, is it possible for a National Guard 37F to go to airborne school?

37F in the National Guard? I've never seen that as a primary MOS for any NG, nor am I aware of any PSYOP NG units. Active Duty yes, Reserve yes, National Guard? Maybe attached to MI or SF.

Get it in your contract if you can. Always the best answer.

If you're not in an Airborne unit, you probably won't ever go. There's no way for the State to justify spending the money to send you to a school for 3 weeks that has no impact upon the unit. Best Warrior tournament often has a school option as an incentive for reaching a certain level, but it's rather unlikely you'll be able to get to go.

goarmy.com says they go to airborne and language..

Psychological operations specialists attend military police One Station Unit Training (OSUT), which combines Army Basic Combat Training and Advanced Individual Training in a 20-week course.

Upon graduation, psychological operations specialists will attend Airborne training, followed by a 10-day Psychological Operations Specialist Assessment and Selection program. This program allows an opportunity to assess each Soldier’s capabilities by testing their psychological, intellectual, physical and problem-solving (dilemma-based) with team event assessments.

If the recruit passes, they’ll move on to the Psychological Operations Specialist Qualification Course to develop the necessary skills of a PSYOP Soldier. The course is currently divided into five phases:

•In-Processing

•Language and Culture

•PSYOP Core

•PSYOP Culmination Exercise
•Graduation
https://www.goarmy.com/careers-and-jobs/browse-career-and-job-categories/intelligence-and-combat-support/psychological-operations-specialist.html