Politician: "Learn to ignore religious classes" (6)
I believe the answer is:
member
'politician' is the definition.
(eg Member of Parliament)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for member that I've seen before include "One of a group or club" , "Limb - person belonging to a group" , "Part of body or one who belongs to a club" , "Eg, leg, arm" , "Component part; associate" .)