A unit’s class may be changed regardless of what level they are, but only certain classes may change into other classes. Class changes cannot be reverted.
In order to change class, the unit must possess the proper class change item that pertains to their class.
When a unit changes class, their stats will be increased, but they will revert to Level 1, with some exceptions. Changing class may also grant them new skills and new weapon types. After a unit changes class, their experience point gain will change to 60%, with the exception of units who possess the ‘Diligence’ skill.