Grade-by-grade adjustment magnitudes: removing retained students raises third grade scores about one month in reading and half a month in math, while adjusted fourth grade scores fall about two months in reading and one and a half months in math¶

Claim · All claims
Evidence · 1 study (2 entries) · associational r2 · q2
Currency · newest study 1998 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? Removing retained students increases third grade mean grade equivalents by approximately one month in reading and one-half month in math. → John Q. Easton 1998 q2 i? Adding retained students lowers adjusted 1998 fourth grade scores by about two months in reading and one and one-half months in math. → John Q. Easton 1998 (2)

Evidence¶

John Q. Easton 1998¶

John Q. Easton, Brian Jacob, Stuart Luppescu, Melissa Roderick. (1998). Adjusting Citywide ITBS Scores for Student Retention in Grades Three, Six, and Eight. Consortium on Chicago School Research. https://consortium.uchicago.edu/publications/adjusting-citywide-itbs-scores-student-retention-grades-three-six-and-eight

q2 · i? · associational · r2

Interpretive statement accompanying Figures 1-2 (third grade/nine-year-olds, mean grade equivalents 1990-1998). The text reports the adjustment raises third grade scores by roughly one month in reading and half a month in math, with adjusted 1998 above 1997 in both subjects.

"In both reading and math, the adjusted scores are higher than the unadjusted scores. Removing the retained students increases the scores by approximately one month (in terms of mean grade equivalent) in reading and one-half month in math."

John Q. Easton 1998 (2)¶

John Q. Easton, Brian Jacob, Stuart Luppescu, Melissa Roderick. (1998). Adjusting Citywide ITBS Scores for Student Retention in Grades Three, Six, and Eight. Consortium on Chicago School Research. https://consortium.uchicago.edu/publications/adjusting-citywide-itbs-scores-student-retention-grades-three-six-and-eight

q2 · i? · associational · r2

Interpretive statement accompanying Figures 3-4 (fourth grade/ten-year-olds). Adding predicted scores of retained third graders lowers fourth grade adjusted 1998 scores, which are lower than 1997 in reading and about the same in math.

"Adjusted 1998 scores are lower than the unadjusted scores by about two months in reading and one and one-half months in math, since the weaker retained students are added in here."

Discussion¶

Related Claims¶

• Removing retained students' scores raises 1998 ITBS scores in grades three, six, and eight, while adding predicted retained-student scores lowers fourth and seventh grade scores — a broader claim this one bears on
• Adjusting for retained students, systemwide 1998 reading scores are essentially unchanged and math scores fall slightly, but both remain above 1997 levels; the authors judge the promotion policy did not seriously distort the results — related