Girls Grow, Overtaking Boys — Growth Sound : Test

“You lost again. Just look at that score. You’re barely above failing.”
The boys are used to winning.
In their classroom, academic competition has always been simple: the boys are smarter, taller, and confident that the girls can never catch up.
At only 4'7" (140 cm), the two girls are constantly teased for being short and supposedly bad at studying.
But then something strange happens.
A mysterious growth sound begins to affect the girls.
Three days later, they discover that they have grown a full 10 cm.
And their growth doesn't stop there.
As their height rises from 140 cm to 150 cm, 160 cm, 170 cm and beyond, something else begins changing too.
Their test scores start climbing.
The girls soon match the boys' highest scores. Then they begin understanding material far beyond the assigned test range. Their memory, reading speed, comprehension, and calculation ability continue improving at an astonishing rate.
The boys try to fight back.
They study harder.
They read more books.
They even try using stacks of books to make up for the growing height difference.
But the girls keep growing.