3 years diploma points on CRS?

[hussain-lala]

my wife’s ECA from WES says in Canadian equivalency it’s a “three year diploma”. She did two years BS after high school and then one year B.Ed (total 15 years education).
When I select 2 or more certificates it results in higher CRS points than bachelors. And there’s no option of three years degree.
Can anyone guide please