Dux
/dʌks/
Definition 1 of 2
Pro Tip 1/3Academic Honor
Refers to the highest-ranking student academically. A prestigious title reflecting hard work and intelligence. 
He worked diligently to become the dux of his high school.
Pro Tip 2/3School Pride
The dux often represents the school's academic excellence and is a source of pride for the institution. 
Our dux scored the highest in national exams, bringing fame to the school.
Pro Tip 3/3Cultural Variance
While 'dux' is common in some countries, it may not be used globally and can differ in prestige. 
In some countries, being named dux is equivalent to being the class valedictorian.