The graph in academy always changes especially in the characters: Sky raider, juggernaut and bomber. For example the dane max in the graph is 45, but if you train the character in the nivel 8 the number needs increment more +12 or to 57.
I believe you're talking about this bug: http://forum.plunderpirates.com/ind...stat-in-academy-when-not-actually-maxed.1701/