In my time at the Armour School (for three years), on average, I spent more time in the field in any of the given three years than I have spent in the past year: and I'm in a unit on the road to high readiness.
Here I've spent roughly 2.5 months in the field since last August. In the year prior to that, at the school, where I was in STANDARDS (not even one of the "lucky" ones who did course after course) I would easily spend over 2.5 months out of 12 in the sticks.
But here's the catcher. As staff, you rotate in and out of the field. So, you head out at 6 am on day 1, return at 6 am on day 2, go back out at 6 am on day 3 and so forth. No FOA entitlement, even though you are virtually in the field for the entire time. You see, you get back home at around 8 am (no sleep from the day "in the field", doing assessments, paperwork, etc), get home. Get a nap. Get up. Go to sleep. Up at 4 am, etc ad nauseum.
All this to spare the school the field pay because it came from their budget. In the end, who gets it? The individual.
And another thing: some people would spend so much time in the field, they looked forward to going to "field" units to get a stable home life! Especially the drivers at the Armour School. Heck, we'd have a parade, I'd see some Cpls, think that they were candidates, only to be told "No, they've been here for three years now...". Wow, just wow.