system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] Does the brilliant [Muggle-Born] Hermione only has the equivalent of a 5th grade education?

She leaves muggle schooling at age 11 (right around 5th grade) to attend a school to learn the fine arts of wizardry. She goes for seven years, and eventually finishes Hogwarts and starts to work with the ministry of magic..

Her bio never says anything about exploring more of her former muggle studies...

Now, as a member of the wizarding community, I kinda get why she wouldn't need to, but this is Hermione Granger, someone with an almost feverish need for knowledge.. AND with strong ties to the muggle world (with regards to her parents).  

Hermione, as highly intelligent as she is, doesn't understand basic geometry... chemistry... algebra... physics?  She doesn't learn about important muggle world events like WWII, Vietnam and the Cuban Missile Crisis and their effects on the rest of the world (outside of the wizarding perspective)?
gpt
She can't practice magic during breaks so when she's not reading ahead in Hogwarts textbooks she's perfectly capable of self-teaching herself what she needs from traditional muggle curriculum. And she definitely wouldn't need ALL of it. 

History? Sure. Basic geometry? Sure. Magic sorta undoes a lot of science and complex math concepts though....

EDIT: Alright you guys are right about math.