I’m kind of confused at what you are even saying. Yes, students who are going into dental school and apply for the 4 year HPSP may not be awarded it due to limited numbers or qualifications. These students can then defer to 3.5 year or even the 3 year. But that means you have to pay for that first semester or first year. You still have the option of receiving the $20K stipend, which would then bump your serve back to 4 years regardless of your HPSP tuition coverage. It sounds like someone is telling you that in the Navy the 3 year HPSP doesn’t start during your 2nd year, but the new fiscal year during your first year. Sure, that’s when the new budget is approved, but they won’t start paying for your tuition until 2nd semester your first year (3.5 HPSP) or 2nd year (3 HPSP). 4 year HPSP have their first semester tuition paid for with the prior years budget, but just because a new fiscal year starts in October, doesn’t mean the government rushes to cover your first semester tuition. They just allocate for the next semester when your contract starts.