I am actually about 30 lbs lighter than i was when i left school.
I graduated at around 240lbs (17 years old), then gradually worked myself up to around 250 by the time I was 23. During that time I had a bad neck injury that put me out of training for 7 months, and so it was a '2 steps back then 3 forward' situation. At 23, I screwed all my rotator cuff muscles (self inflicted- doh!)and needed a lot of rehab. during this time, unlike my neck, I could still keep active, and got heavily into my cardio work. I built up steadily, and used swimming as a big part of my shoulder rehab. By the time I was given the all clear on my cuffs, I was down to 160 lbs (losing muscle drops weight more dramaticaly than fat), but setting myself mini triathalons 'for fun'.
From 24-27 yrs old I built my strength and muscle back to the point of being a very lean 196 lbs and i maintained that nice and steady until I met my wife at 27 years old.
That lead to more or less a year off training completely, and lots of good food and drink. I hit 28 years old at a bulky 260
28-29 I re-instated training, but the thought of losing the bulk would have meant sorting my lifestyle out (i was having too much fun for that), so I just worked on powerlifting and kidding myself that I was happy to be big for that. Hit 29 at around 270, quit smoking and drinking and had a medical that showed my blood pressure was bad, and that i needed to sort myself out. so I did.
29-31 I undid the damage and got down to 205 (my 'pre-wife' weight + some extra muscle). at 32 I remain at 205-210 and continue to train in a balanced fashion with no specific goal other than to work as hard as I can and enjoy it.