So I found another handbook, which indicates that the Survey version is 20 items TOTAL, while the plus Goals version is 30-50 items PER AREA, which includes multiple reading/language and mathematics areas:

http://legacysupport.nwea.org/sites/www.nwea.org/files/resources/Teacher_Handbook.pdf

See page 3. Caveat: this may be an older version, not the new CC version.

...pronounced like the long vowel and first letter of the alphabet...