Thank you. I moved him up a level in math and they emailed me saying he'd have to sign in as upper or lower, accordingly, or they wouldn't show his progress. I noticed that if he's signed up for 4th, grades 3, 4 and 5 are available, so I emailed them back asking them to put him in 4th for both. Thanks for pointing that out. He really likes it, so we're going to give it a try.