The WWC improvement index is +31 percentile points for English language development and +3 percentile points for reading achievement¶

Claim · All claims
Evidence · 1 study · quant-synthesis r? · q2
Currency · newest study 2006 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? Across the two studies, the improvement index averaged +31 percentile points for English language development and +3 percentile points (range 0 to +5) for reading achievement. → What Works Clearinghouse 2006

Evidence¶

What Works Clearinghouse 2006¶

What Works Clearinghouse, U.S. Department of Education. (2006). WWC Intervention Report: Fast ForWord Language. http://www.scilearn.com

q2 · i? · quant-synthesis · r?

WWC-conducted synthesis across the two studies meeting standards, computing improvement indices based on average effect sizes for each outcome domain. The index represents the percentile-rank difference between the average intervention student and the average comparison student, regardless of statistical significance or study design.

"The improvement index for reading achievement is +3 percentile points, with a range of 0 to +5 percentile points. The improve- ment index for English language development is +31 percentile points."

Discussion¶

Learner Variables¶

• Reading and Language — outcome: instruction changes it
• English-Learner Status — outcome: instruction changes it

Related Claims¶

• The WWC rates Instructional Conversations and Literature Logs as having potentially positive effects on reading achievement and English language development — related
• Fast ForWord Language has potentially positive effects on English language development of elementary school English language learners — related
• The WWC-computed average effect size for Reading Mastery on ELL reading achievement is 0.76, corresponding to an improvement index of +28 percentile points — related
• The average improvement index for PALS on reading achievement for English language learners is +12 percentile points, ranging from +5 to +25 across findings — related
• The average improvement index for Arthur in English language development is +11 percentile points, ranging from –5 to +17 across findings — reports the opposite
• Peer Tutoring and Response Groups has positive effects on English language development for English language learners, with an average improvement index of +17 percentile points — related