It is my understanding that Eagle Scouts and JROTC students can be considered for promotion after advanced individual training to E-3 (PFC). Doesn't mean they have to promote you. Again any other person could be considered for skipping E-2 and going straight to E-3, based on the merit of their performance. After E-3, you must apply for the promotion and pass the tests, maybe it is after E-4. Definitely any E-5 out there put some time in and learned what he needed to pass the tests.