Notorious B.I.G.'s Son -- I'm a High School Graduate!

Notorious B.I.G. might have been called a fool for dropping out of high school, but nobody can say that about his son ... because Christopher Wallace Jr. is now a high school grad.

Biggie's only son graduated from Santa Margarita Catholic High School with mama Faith Evans front and center.

Faith posted the photo above on her Instagram page with the caption, "My first born son @cj_toa & I #proud."

Wallace Jr. was only a year old when his father was murdered.