We've been using the Performance Series (not the Achievement series) for several years now. It suits our purposes (and is less labor intensive than NWEA MAP, though MAP has good but costly training sessions). We also use STAR Math and STAR Reading to cross check. Results are pretty similar).
The difference between Performance and Achievement Series was explained to me once . . . better ask the sales rep. Joel Brondos Brookfield, IL | Subscription info at http://www.tech-geeks.org |
