This is the 222nd most frequent Czech word.
vyšší
"Higher" or "taller."
In this sentence, "vyšší" is used as a comparative form of the adjective "vysoký", meaning "tall", to indicate height.
Má vyšší dům než její soused.
She has a taller house than her neighbor.
Here, "vyšší" functions as a comparative form of "vysoký", meaning "high" or "advanced", referring to a figurative level.
Chci dosáhnout vyšší úrovně jazykových dovedností.
I want to achieve a higher level of language skills.
In this instance, "vyšší" modifies "studium" to describe advanced or graduate-level education.