Fileboy is right. It is very rare to find any Judo classes that teach atemi.
I remember reading Kodokan Judo by Jirgo Kano. If I compare the content of the book to the modern Judo classes, much of what is in the book has been dispensed with. Things like Kata and Atemi don't feature much in most Judo clubs today. As Fileboy said, for most people and clubs Judo is a sport. Atemi isn't allowed under modern randori rules, so most places aren't going to train it.
"Let your food be your medicine, and your medicine be your food"