Uh...
12-2 >>> 11 > 1 > 2 > K > 10 > 12-1 > 3 > 8 > 9 > 4 > 5 > 7 > 6
Remembering 3rd grade and earlier is hard, but I seem to remember being incredibly happy (3rd grade being a bit more mixed). I certainly had a lot more 'friends' than later years, whatever that means at that age.
The bottom 6 kinda blend together as I was a whiny antisocial douche with like two real friends for the entire time. Senior year gets split into semesters just because of how different they were - fall had a lot of stupid drama and spring was pretty much the best thing ever.
Throwing in college, I'd have to break it into semesters, in which case 3-1 > 2-1 > 3-2 > 1-1 > 1-2 >>> 2-2, and I'm not sure how they compare to grade school but sophomore spring is probably the only one that'd be below my senior spring. Terrible classes and a terrible living situation are not a good mix.
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Fight like dragons, have no fear, swords are made of STEEEEEEEEL~