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Spouse or common-law partner factors

(Maximum 40 points)
Level of education 10
Official language proficiency 20
Canadian Work Experience 10

Source : http://www.cic.gc.ca/english/express-entry/grid-crs.asp
 
what score in ielts is required to get 20 points, i think don't need a lot higher as compared to main applicant?
 
Spouse need to have atleast

Speaking : 7.0
Listening : 8.0
Reading : 7.0
Writing : 7.0

for full 20 points.