Estimated Oral Reading Fluency

A New Measure in STAR-EL

and STAR Reading

It’s all about correlations!

• The link/correlation between fluency and reading comprehension is well documented.

• Measures of fluency were first used as a proxy for measuring comprehension.

• Reading First and DIBELS have placed great emphasis on fluency.

STAR and Est. ORF

• Resulted from a correlational study looking at– STAR (EL and Reading) scores– and DIBELS Oral Reading Fluency

• Statistically HUGE sample– N=12,220

Wow! What a correlation!

Wow! What a correlation!

Things to point out

G4 – R=0.71

G3 – R=0.78

G2 – R=0.84

G1- R=0.87

Interpreting a Correlation

• Can be positive or negative• 0.0 = no correlation• 1.0 = complete, 1-to-1 correlation• Correlations are deemed “statistically

significant” at about 0.3, depending on the sample size (N)

• To turn a correlation into a more easily understood framework, square it. The result then represents, roughly, the percentage of the time that you could correctly accurately predict one measure with the other.

Things to point out

• G4 – R=0.71

• G3 – R=0.78

• G2 – R=0.84

• G1- R=0.87

A Powerful Correlation!

• 0.87 x 0.87 = 0.756– With one measure (STAR scale score or

DORF) you could correctly accurately predict the other measure 75.6% of the time.

• Remember this formula,

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