Yes, I did one about 10 years ago. It did actually slow me down for a while. I was only within the limit for a speed awareness course by 1mph according to online info.
My last was 10 years ago. At the registration but at the beginning, I mentioned to the guy taking it that I thought I might have got caught speeding on the way to the course! And it was the same spot I had been caught before!
Sweaty wait for a couple of weeks but I avoided it, thankfully.
Have fun with that. That’s a day of your life you will never get back!
(Speaking from experience - obviously)