I know MANY parents who work who would be insulted to have it implied they are less involved in school (or whatever) because they work -- they do all the same stuff i do.... just some times differntly.
Of course, it's not necessarily a WOHP/SAHP issue. I'm sure there are many WOHP's who manage to keep things organized and streamlined. And many SAHP's who don't. And it's not necessarily a reflection on the parent if things aren't streamlined.
Okay, now I'm going to be repetitive, but I'll repeat: it's unfair to punish children for things they have no control over. I don't believe in rewards and punishments anyway, but I realize taking rewards and punishments out of the schools would basically be amputating the legs the schools have to stand on.
So I'll just say, if you've got to reward/punish, at least do it for things the children themselves can do something about.