Dont, dont. For many SLs that is a red flag. If your current school is giving you the internal appointment it means they are giving you the opportunity to learn on the job. By applying out you may lose your internal appt even if you dont transfer, as they may then decide to focus their grooming efforts on other officers.

SLs talk to each other, if your current P feels you’re not ready, chances are that he/she will reflect that way when the P of the school you applied to asks