Grade is a feature of the Tales series. It is most associated with the Grade Shop, where bonuses that enhance the next playthrough can be bought. Grade is most often awarded for performing well in battle, and can be taken away for performing poorly.
Tales of Phantasia
Grade was only included in the PSP Full Voice Edition of Tales of Phantasia. It can be won or lost from battle and spent at the Grade Shop upon starting a New Game Plus.
Tales of Destiny 2
Grade, as well as the Grade Shop, was first introduced in Tales of Destiny 2. On the "easy" difficulty, the player is unable to earn Grade; each successive difficulty presents the opportunity to earn more. The "normal" difficulty has a maximum of four Grade per battle; the next difficulty will increase that amount by two. It is also possible to lose Grade for performing poorly, though only a maximum of two per battle. In boss battles, this changes; the maximum Grade able to be earned is ten times the normal amount.
Tales of Symphonia
In Tales of Symphonia, Grade functions similarly to how it does in Tales of Destiny 2. Grade can be awarded or deducted after battle depending on performance during battle, and there is a Grade Shop available upon beating the game and starting a new game from a cleared save file. In addition, there are special vendors throughout the game that allow the player to buy customization materials and EX Gems using Grade. These venders also allow the player to check how much Grade the player has earned before beating the game. Completing the game provides a bonus of 1,000 Grade.