You have been able to enter a restaurant and see its score at http://lapublichealth.org/rating/
since around the beginning of the entire system.

It is very convenient as an address directory. But people who obsess about the actual letters should take a look at their own kitchin some time.

A while back, a small faux-Italian trattoria in Toluca Lake whose name I cannot remember had a "C" posted in its window. Previously, the place had been sporting an "A". The same day the "C" went up, the owner of the restaurant posted a letter on the window next to the County health sign telling the public that she completely disagreed with the grade, that she was professional chef who ran a spotless kitchen, and that she was going to get the "A" rating back. About a month later, the "C" was gone, replaced by an "A". That actually prompted me try the food (I liked the place, although the tiramisu wasn't that great.)