Immigration Madrid 2021

This dataset is translated from spanish, but nationalities are in spanish due to the number of countries.
Pre-college is a translation for "Bachillerato", in spain you finish high school with 16 years wich is mandatory, then you can study two years of "Bachillerato" before college.
For Administrative situation I tried to translate as good as I could, I dont understand some terms.
The target variable is 'Working' wich means if the person has been hired. This variable is quite unbalance.