Each unit has a hidden value that determines how many level ups they will gain during the timeskip. The values range from 0 to 3 (except

), and generally correspond to how hard working or fit for war the unit is. On Normal mode, all units will level to a minimum of level 20, but will go over if their automatic leveling amount is higher. For example, a level 19 Caspar pretimeskip will become level 22 regardless of difficulty, but a level 1 Caspar will become level 20 on Normal mode, but level 4 on Hard/Maddening. Byleth was asleep the whole time, so they will not gain any levels.

The House Leaders (for CF/AM/VW) will first be reclassed into their unique "advanced" classes before being autoleveled. This can somewhat break the game on Normal Mode if they are left at level 1 for the entirety of the academy phase; they will first reclass into their unique class and gain all of those base stats, before leveling up all the way to level 20 and gaining even more stats. This results in level 20 house leaders with much higher stats than average.

The table below shows the amount of levels that each unit will gain during the timeskip. The table can be sorted by the "Levels" column. Note that Jeritza only joins you after the timeskip, but he has a value in the game anyways.