Just curious really.
DD gets spellings each week, once only 8, the most has been 12, with most numbers in-between. The amount of spellings has not been increasing incrementally - the amount is always a surprise. Spellings are structured phonically, but I can't think that's the reason for regularly having a different amount each week.
So if your DC gets spellings how many do they get and does anyone also get a different amount each week or the same, or maybe an increasing amount (which makes sense if they're doing well or moving up groups for example)?