I have looked over the schoolpop website, and it surely does offer much lower donations to schools than schoolcash did. That's a drag! So what our group is doing now is shopping through www.HEARTof.com. They claim to have the highest donations on the web, and that seems to be true.
Just got an email that SchoolCash and Schoolpop have joined up (Schoolpop being the surviving entity; SchoolCash is pretty much shutting down immediately from what I can gather). I generally found SchoolCash's rebate percentages to be a bit higher, so it will be interesting to see how this pans out.