Wisdom is not finally tested by the schools, Wisdom cannot be pass'd from one having it to another not having it, Wisdom is of the soul, is not susceptible of proof, is its own proof.
You have seen that the universe is at root a magical illusion and a fabulous game, and that there is no separate "you" to get something out of it, as if life were a bank to be robbed. The only real "you" is the one that comes and goes, manifests and withdraws itself eternally in and as every conscious being. For "you" is the universe looking at itself from billions of points of view, points that come and go so that the vision is forever new.
Wisdom doesn't automatically come with old age. Nothing does - except wrinkles. It's true, some wines improve with age. But only if the grapes were good in the first place.