WWC review of this study

Are high-quality schools enough to close the achievement gap? Evidence from a social experiment in Harlem.

Dobbie, W., & Fryer, R. G., Jr., (2009). (NBER Working Paper No. 15473). Cambridge, MA: National Bureau of Economic Research.

  • Randomized Controlled Trial
     examining 
    467
     students 
    in grades
    6-8
At least one statistically significant positive finding
Meets WWC standards without reservations

Reviewed: March 2010

English language arts achievement outcomes—Statistically significant positive effects found
Outcome
measure
Comparison Period Sample Intervention
mean
Comparison
mean
Significant? Improvement
index

English Language Arts (ELA) Score

Promise Academy Middle School vs. Business as usual

Posttest

Grade 8
467 students

N/A

N/A

No

--
More Outcomes

English Language Arts (ELA) Score

Promise Academy Middle School vs. Business as usual

Posttest

Grade 6
467 students

N/A

N/A

No

--

English Language Arts (ELA) Score

Promise Academy Middle School vs. Business as usual

Posttest

Grade 7
467 students

N/A

N/A

No

--
Mathematics achievement outcomes—Statistically significant positive effects found
Outcome
measure
Comparison Period Sample Intervention
mean
Comparison
mean
Significant? Improvement
index

Math score

Promise Academy Middle School vs. Business as usual

Posttest

Grade 8
467 students

N/A

N/A

Yes

 
 
21
More Outcomes

Math score

Promise Academy Middle School vs. Business as usual

Posttest

Grade 7
467 students

N/A

N/A

Yes

 
 
11

Math score

Promise Academy Middle School vs. Business as usual

Posttest

Grade 6
467 students

N/A

N/A

Yes

 
 
10
Staying in school outcomes—Indeterminate effects found
Outcome
measure
Comparison Period Sample Intervention
mean
Comparison
mean
Significant? Improvement
index

Number of absences

Promise Academy Middle School vs. Business as usual

Posttest

Grade 6
467 students

N/A

N/A

No

--
More Outcomes

Number of absences

Promise Academy Middle School vs. Business as usual

Posttest

Grade 7
467 students

N/A

N/A

No

--

Number of absences

Promise Academy Middle School vs. Business as usual

Posttest

Grade 8
467 students

N/A

N/A

No

--

Characteristics of study sample as reported by study author.


  • 81% Free or reduced price lunch

  • Female: 53%
    Male: 47%
  • Race
    Black
    84%
  • Ethnicity
    Hispanic
    15%
    Not Hispanic
    85%

  • Urban
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    New York
 

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This download will include data files for study and findings review data and a data dictionary.

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