Standardized Achievement Results
The introduction of the Singapore Math
curriculum did not negatively impact either the
CRT test outcomes or ITBS achievement results
from 2006-2009. Instead, CRT results from the
2007-2008 to the 2009-2010 academic year
revealed that at least 65% of schools increased
the percentage of students meeting minimum
state CRT requirements in mathematics at every
grade level: 65% of schools increased CRT
achievement in mathematics in Grade 1, 75% of
schools at Grade 2 and Grade 3, 85% of schools
at Grade 4, and 80% of schools at Grade 5.
ITBS results from the 2007-2008 to the
2009-2010 academic year found 95% of schools
increased average student percentile rankings on
the mathematics portion of the ITBS for Grade 3
and Grade 4, 75% of schools increased for
Grade 5, and 65% of schools increased for
Grade 2. The largest increase in average
percentile ranking on the ITBS was 34.91 points
at one school; this increase occurred at Grade 3.
The largest decrease was 10.79 points at one
school; this decrease occurred in Grade 5. Table
2 shows the changes in ITBS percentile ranking
in mathematics from 2006-2009:
Table 2
Change in ITBS Mean Percentile Ranking in
Math, 2006-2009
Increase
95%
Decrease
5%
Change in ITBS Mean
Percentile Ranking in Math
Grade 2 2006-2009
Increase
100%
Decrease
0%
Change in ITBS Mean
Percentile Ranking in Math
Grade 3 2006-2009
Increase
95%
Decrease
5%
Change in ITBS Mean
Percentile Ranking in Math
Grade 4 2006-2009
Increase
85%
Decrease
15%
Change in ITBS Mean
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