MAsMom - welcome! Everyone is welcome! I don't have DYS scores for DS but have been very welcomed here! Your DD is quite young for testing and you really can't draw any meaningful conclusions, IMHO. If you see issues later, you can have her retested on the WISC when she's 6-7yrs old.
ABout the school - ok, if the teacher sees it, the school sees it, why not give it a try? If your DD starts struggling, you could always put her in a different school. Depending on how you handle it w/ her, it wouldn't have any long-lasting effects to change schools, I would think. Perhaps you can observe a few more days, look at the curriculum and let DD visit and see what she thinks. I wouldn't go on her test scores.
