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Higher SAT scores in the Midwest:
Is the US-Midwest smarter than the rest
of the USA?
National Center for Educational Statistics Data Project
2008-2010 NCES Data
Charlie Au – Nov 2012
Survey of NCES Data on Composite SAT scores reported
Midwest composite SAT Scores are
~ 100 – 300 points higher than
the rest of the country!
Midwest SAT scores are 100-300 points higher than the rest of the country!
What questions this presentation
will answer:
Why does the Midwest score higher than the
other states?
◦ Does Smaller Class Size matter?
Are there biases in reporting of SAT Scores?
2010 NCES Data - Class Size and SAT Score in 50 states +
DC
No correlation between
class size and SAT Score!
Source: 2010 – National Center for Education Statistics
2010 NCES Data - Class Size and SAT Score in 50 states +
DC
No correlation between
class size and SAT Score!
Source: 2010 – National Center for Education Statistics
No correlation between
class size and SAT Score!
Source: 2009 – National Center for Education Statistics
2009 NCES Data - Class Size and SAT Score in 50 states +
DC
1,300
1,400
1,500
1,600
1,700
1,800
10.0 15.0 20.0 25.0
Co
mp
osi
te S
AT
Sco
re
Avg. Class Size
Source: 2009 – National Center for Education Statistics
2009 NCES Data - Class Size and SAT Score in 50 states +
DC
1,300
1,400
1,500
1,600
1,700
1,800
10.0 15.0 20.0 25.0
Co
mp
osi
te S
AT
Sco
re
Avg. Class Size
No correlation between
class size and SAT Score!
- 3 years worth of data that do not show any
correlation between class size and SAT score.
Source: 2008 – National Center for Education Statistics
1300
1400
1500
1600
1700
1800
10.0 15.0 20.0 25.0
Co
mp
osi
te S
AT
Sco
re
Avg. Class Size
2008 NCES Data - Class Size and SAT Score in 50 states +
DC
- 3 years worth of data that do not show any
correlation between class size and SAT score.
Source: 2008 – National Center for Education Statistics
1300
1400
1500
1600
1700
1800
10.0 15.0 20.0 25.0
Co
mp
osi
te S
AT
Sco
re
Avg. Class Size
No correlation between
class size and SAT Score!
2008 NCES Data - Class Size and SAT Score in 50 states +
DC
No correlation between class size and
higher SAT scores in any of the 50 states
(and D.C.)
Clip: Gamey
Let’s talk “SAT Participation”
In some states, taking the SAT is highly
encouraged or mandatory for High
School Graduates
In other states, the SAT is only taken by
college-bound students
There’s an obvious disparity between
higher scoring states and lower scoring
states
Higher state average SAT scores are
highly correlated with the percentage of
high school graduates that take the
SAT in that state
Let’s talk “SAT Participation”
Midwest states have the least students
taking the SAT 2010 Percentages of
High School Grads
taking the SAT
2010 Composite SAT
scores
Source: 2010 – National Center for Education Statistics:
Who is being reported in
each state?
• Non-
college
bound +
• College
bound
students
• Mostly
college
bound
students
Reporting Bias in Midwest SAT
scores We can conclude that states with higher
reported SAT scores are higher because they
report fewer scores from students not
interested in attending college.
Photos: blogspot and flickr
Data taken from the
National Center for Education
Statistics SAT Scores and Percentage of Graduates
taking the SAT, by State: (1995-2011)
http://nces.ed.gov/programs/digest/d11/ta
bles/dt11_156.asp
Student to Teacher ratio, by State (2008-
2010)
http://nces.ed.gov/programs/digest/d12/ta
bles/dt12_078.asp