The education levels with the education points are.
VERY LOW (10 and under)
PRETTY LOW (from 10 to 19)
DECENT (from 20 to 29)
PRETTY GOOD (from 30 to 39)
GOOD (from 40 to 49)
GREAT (from 50 to 59)
INCREDIBLE (from 60 to NICE)
THE BEST IN THE COUNTRY (70 and over)
As you can see, Pretty Good is lower than Good.
And just to be more thorough with this.
By default the "points gained per class" is 1, you can upgrade it with:
Textbook upgrade: Upgrade the property in Jessica's office. (+1)
Library Book: Find the book in the college library. (+1)
Madison's advice: In her office, she will give you teaching advice. (+1)
Be sure to get those upgrades if you can, makes things way easier when you get 4 points per class instead of just 1.
But also there's a "education loss" that happens each friday.
By default it will take away 5 points per week, but you can reduce that with:
Crystal: Get it from the hooded merchant in the field. (-1)
Veronica's advice: Find her and talk to her. (-1)
So with the upgrades, you could potentially get 40 points a week if you spent each morning and afternoon doing classes. Well, 37, the point drop is still there, but a bit less noticeable.
Also mind you, you don't get any education points if you used a power during a class.