Driver discount for taking class

[GeraldS21534]

Why is aarp sending email and cards telling me to take the drivers safety class to MAYBE get a discount from my insurer? I took the class about two years ago. Even my State, Illinois, doesn't require a drivers test more than once in four years. The mailed card I got said to ignore it if I had taken the aarp drivers test within 90 days. Is aarp saying that if I took the test 91 days ago, I should consider retaking it to stay 'sharp' and perhaps maintain my insurance discount?I think the driver safety class, at $25.00,  mainly serves as an aarp profit opportunity. 

Spoiler

Spoiler

[BtW751689]

My certificate is for three years.  I took the class two months ago and I still get the emails and mail reminding me.  BTW I was able to take the class FREE through my local library.  As far as the discount, I understand it is the INSURANCE COMPANY that decides if they will give you a break.  Of the 20 people taking the class, answers ranged from a small percentage like less than 5% to 20%(this was the instructor but he had several people on his policy)