Our function, check_minority, is flexible and accepts a parameter to lower or raise the percentage of minority threshold. Let's check the shape and number of unique states for a couple of other thresholds:

>>> college_filtered_20 = grouped.filter(check_minority, threshold=.2)
>>> college_filtered_20.shape
(7461, 26)

>>> college_filtered_20['STABBR'].nunique()
57

>>> college_filtered_70 = grouped.filter(check_minority, threshold=.7)
>>> college_filtered_70.shape
(957, 26)

>>> college_filtered_70['STABBR'].nunique()
10