FWIW, NJ does not offer a "re-certificating" class [if that is what the above word is supposed to mean]....as NJ does not offer any certificates in the first place.
Now if you are asking about the Continuing Education that NJ ECs are required to take....check this thread:
I haven't added dates/flyers to that thread in months....the websites & phone numbers should be the same, but the course dates have all expired/been completed....they may have added additional dates, call/contact them to find out.