EXP Share systems distribute experience to party members, but the details vary widely between games. Some versions give experience to the holder, some share it with the whole party, and some allow the feature to be toggled. Experience earned can depend on level differences, participation, trainer battles, special bonuses, and other game-specific formulas. EXP Share is helpful for keeping a team close in level, but it can also make a story playthrough easier or cause over-leveling. If you want balanced training, rotate party members and check whether your game allows the setting to be turned off.
