Ruby - that's a wonderful story! I remember when my son did the exact same thing but he might have been in 2nd grade at the time. That's what I like about the math program I use, it presents problems like this to them and let them reason through it.

The other question was whether a 259 on the survey w/ goals 2-5 would be equivalent to a 259 on the 6+. The NWEA rep said it is and it isn't lol. The 6+ test is harder so you might not get a large gain when going from the 2-5 to the 6+.