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Well, I don't know, Education is for those who like it; in my opinion, it's only worth taking closer to the final battle because of Fire Fury, but otherwise... I prefer other skills for leveling up.
I usually take Haghesh; she already has the basics of attack. We take Marksmanship; if it's not offered, we choose something from the racial skills; don't take new, non-racial skills, or you'll never get what you need. After Marksmanship, take Advanced Attack and Fire Arrows. You need to get them as early as possible; they help a lot in leveling up. Then, we try to get Mechanics; again, we don't take things like Leadership and so on; yes, we'll need them, but later, and they will definitely be offered later. Once we have Mechanics, we take Logistics; there shouldn't be any problems here; it's often offered. We level up Ballistics, Tactics, and Logistics simultaneously until we reach Path of War. And then, it's up to you.
If you take Education first (and if you've already decided to level it up because of the +15% experience, then you should take it as early as possible, because the stats are recalculated and what was missing is added, but the experience is not recalculated), so, if you take it instead of Fire Arrows, Mechanics, and Logistics, I don't think it will make leveling up much faster. The army will be weaker, and there won't be such a quick start. But if you're planning a long game and leveling up to levels around thirty, then Education will probably pay off handsomely, but such long games are rare online.
This refers to the game being played on Veteran level or higher.