Feat: Graduate of Higher Learning
Requirements: Int 12+, Literacy
Your character has attended a college of some sort, be it monastic, magical, etc.
Bonus: Thanks to rigorous testing and the efforts of the school's educational staff, your Intelligence has increased by +1 and you gain additional skill points to assign. This Feat also adds four (4) years to the character's age. The DM should decide if this Feat can be taken past 1st level.
(According to RAW, you get more skill points. The bonus represents the mind expanding in ability and the skill points are the actual knowledge gained).
https://www.d20srd.org/srd/theBasics.htm#intelligenceInt