The RAND Corp. analyzed California students' scores on the Stanford Achievement Test-9th Edition from 1998 to 2002, adjusting them for demographic factors. The bars represent national percentile rankings.
NOTE: Differences between scores represented by bars with asterisks and scores of conventional public schools are not statistically significant.
SOURCE: RAND Corp.
Vol. 22, Issue 42, Page 16Published in Print: July 9, 2003, as Charter Results