KoiPond -- "Could someone be so kind as to tell me how long the count class is? Going to one on Wednesday. "
-- As with most everything else, it depends.
-- A District Pre-Count Conference / Meeting can take hours as the leader(s) cover a lot of subjects. And carriers have lots of questions, especially when carriers from one office discover how things are done in another office. One of my old state pre-count mail guides was 29 pages long and that covered all of the column entries, the important dates, disagreements over mail pieces, the use of the count "ruler", High-Low Option, route inspection - and so on. Usually there was a need for a break.
-- The office Pre-Count Conference / Meeting is much shorter. Some suggest / recommend 20 minutes, which might happen is no major disagreements or surprise items from manglement are presented - like "Oh, by the way, we are going to change the way such and such as been done for the past 20 years."
-- If significantly over 15-20 minutes, it will most likely disrupt the rest of your work day especially if manglement reminds you to be "Back by 5!", so politely ask for payment via the 8127 or 1314-A for the additional minutes.
-- If told "NO!", may consider smiling and filing.