For example, while the 25th
percentile math score for black 13 - year - olds was unchanged between 1986 and 1999, it rose between 1999 and 2008 by the equivalent of more than a full grade level.
The 25th
percentile math score for black 13 - year - olds was virtually unchanged between 1986 and 1999.
Not exact matches
If the same approach is applied to the STAR sample to adjust for the fact that some students did not enroll in the class they were assigned to - and a comparable sample of low - income black students is used - the gains in test
scores after two years of attending a small class (average of 16 students) as opposed to a regular - size class (average of 23 students) is 9.1 national
percentile ranks in reading and 9.8 ranks in
math.
For example, Florida State University's 2017 study of the Florida Tax Credit Scholarship Program found that participants were four percentage points less likely to be white, one percentage point more likely to qualify for free lunch, and had prior
math and reading
scores that were two to four
percentile points lower than eligible students that did not participate in the choice program.
When test
scores came in showing results as low as the 39th
percentile in
math in those first few years, she and her staff resolved to make a change.
On average across middle and high school
math, TFA teachers out - performed veteran teachers by 0.07 standard deviations, the equivalent of 2.6 additional months of instruction or helping a student move from the 27th to the 30th
percentile on a normal distribution of test
scores.
the average
math scores of students assigned to three highly effective teachers in a row rose from the 55th
percentile in third grade to the 76th
percentile by the end of fifth grade.
For example, in 4th - grade
math, we find that NCLB increased
scores at the 10th
percentile by roughly 0.29 standard deviations compared with an increase of only 0.17 standard deviations at the 90th
percentile (see Figure 3).
Relative to the median, a teacher at the 84th
percentile increases
math and English
scores by 12 and 8 percent of a standard deviation, respectively — equivalent to approximately 3 months of additional instruction.
My results indicate that delaying the start times of middle schools that currently open at 7:30 by one hour would increase
math and reading
scores by 2 to 3
percentile points, an impact that persists into at least the 10th grade.
While we estimated that, after one year, African - American students
scored 7
percentile points higher on the
math portion of the Iowa Test of Basic Skills than their peers in public schools, Barnard reports impacts of 6
percentile points for African - American students from low - performing public schools.
The results indicate that a one - hour delay in start time increases standardized test
scores on both
math and reading tests by roughly 3
percentile points.
In
math, average American 8th graders would have
scored below the 25th
percentile in Japan or Korea.»
For example, a student who begins the year at the 50th
percentile on the state reading and
math test and is assigned to a teacher in the top quartile in terms of overall TES
scores will perform on average, by the end of the school year, three
percentile points higher in reading and two points higher in
math than a peer who began the year at the same achievement level but was assigned to a bottom - quartile teacher.
The corresponding changes among eighth - grade
math scores are small only in comparison: 6 points nationwide, 11 points for black students, 10 points for Hispanic students, and 8 points for those students at the 10th
percentile.
In both
math and reading, the national test -
score gap in 1965 was 1.1 standard deviations, implying that the average black 12th grader placed at the 13th
percentile of the
score distribution for white students.
In reading, the achievement gap has improved slightly more than in
math (0.3 standard deviations), but after a half century, the average black student
scores at just the 22nd
percentile of the white distribution.
Adding one troubled peer to a classroom of 20 students reduces white boys» reading and
math scores by 1.6
percentile points and black boys» reading and
math scores by 0.9
percentile points (the effects on girls are negligible).
For a better sense of the magnitude of these estimates, consider a student who begins the year at the 50th
percentile and is assigned to a top - quartile teacher as measured by the Overall Classroom Practices
score; by the end of the school year, that student, on average, will
score about three
percentile points higher in reading and about two points higher in
math than a peer who began the year at the same achievement level but was assigned to a bottom - quartile teacher.
Only in Dayton were there minor differences in the pre-lottery test
scores: those offered a voucher
scored 6.5
percentile points lower in
math and 3.1 points lower in reading than those not offered a scholarship, a statistically significant difference.
Applicants to Prairie
score about the same in
math as students in the neighboring regular public schools, but their reading
scores are higher (4
percentile points higher).
On average in the three cities, African - American students who switched from public to private schools
scored 6.3
percentile points higher than their peers in the control group on the reading portion of the test and 6.2 points higher on the
math portion.
The Singapore texts and methods were so effective in College Gardens that the
scores of students there on the
math computation portion of the standardized Comprehensive Tests of Basic Skills (CTBS) rose from the 50th and 60th
percentiles to the low 90s in the first 4 years they were used.
Although the increases were most significant in the lower grades, the number of seventh - grade students with limited English proficiency who
scored above the 50th
percentile also increased — by 2 percent in language, reading, and spelling and by 3 percent in
math.
-- After two years, African - American voucher students had combined reading and
math scores 6.5
percentile points higher than the control group.
Bucktown's applicants had similar reading
scores but lower
math scores (7
percentile points lower) compared with students in neighboring regular public schools.
-- After one year, voucher students had reading
scores 8
percentile points higher than the control group and
math scores 7 points higher.
The Beaverton School District did just that four years ago when it started Summa Options, a program of advanced curriculum for students who
score in the 99
percentile on standardized reading and
math tests or a test of cognitive ability.
After one year, the results show that students who used a scholarship to attend a private school
scored 5.9
percentile points higher on the
math section of the ITBS than comparable students who remained in public schools.
Voucher - threatened schools made the next highest relative gains: 9.2 scale -
score points on the
math FCAT and 3.5
percentile points on the Stanford - 9 in
math.
Always - D schools, which, faced with the real danger of receiving their first F, had some incentive to improve, made a relative gain of 4.3 scale -
score points on the
math FCAT and 1.3
percentile points on the Stanford - 9
math test.
Schools at the 5th
percentile of schools in Florida had a reading scale
score of 243 and a
math scale
score of 247, while the 95th
percentile school had a reading
score of 327 and a
math score of 328.)
African American students advanced from the bottom quarter of Chicago's test
score distribution for white students to the 46th
percentile in reading and
math, essentially closing the racial achievement gap.
Findings: Dayton, OH — After two years, African American voucher students had combined reading and
math scores 6.5
percentile points higher than the control group.
Findings: New York, NY — Using alternative methods, this study confirms the 2003 finding that, after one year, voucher students had
math scores 5
percentile points higher than the control group.
Findings: New York, NY — After one year, voucher students had
math scores 5
percentile points higher than the control group.
Findings: New York, NY — After three years, African American voucher students had combined reading and
math scores 9
percentile points higher than the control group.
If you look at
math test
scores in other countries, you see that the gender gap at the high end is not a universal phenomenon: In Iceland, Thailand, Indonesia, and the U.K., girls and boys
score at about the same levels in the 95th and 99th
percentiles: (click chart for larger image)
Findings: Charlotte, NC — After one year, voucher students had reading
scores 8
percentile points higher than the control group and
math scores 7 points higher.
Carrell and Hoekstra find that adding one troubled student to a classroom of 20 students decreases student reading and
math test
scores by more than two - thirds of a
percentile point and increases misbehavior among other students in the classroom by 16 percent.
Thus, using the PISA 2006 microdata, we can calculate the PISA
math test
score at which the 93.96 th
percentile (100.00 — 6.04) of the U.S. student population performs.
Earlier program evaluation reports for Louisiana showed that voucher students made significantly lower gains on
math and reading test
scores in the first year (27
percentile points and 17
percentile points lower, respectively) than students who applied for vouchers but were not awarded them through the lottery.
Students whose middle schools started one hour later when they were in 8th grade continue to
score 2
percentile points higher in both
math and reading when tested in grade 10.
Among black children, the results indicate that having a black teacher for a year was associated with a statistically significant 3 to 5
percentile - point increase in
math scores.
To eliminate this bias, we take advantage of the fact that students
scoring below the 50th
percentile on the 8th - grade ITBS
math test were supposed to enroll in double - dose algebra.
A new study finds that delaying middle - school start times by one hour, from roughly 7:30 to 8:30 a.m., would increase standardized
math and reading
scores by 2 to 3
percentile points.
When a meeting was held at the end of the year, the first - grade teacher reported that the student had
scored at the 99th
percentile in both total reading and
math and that the student fit in well with the first grade students, both academically and socially.
Students in Ms. Funk's class also increased their STAR
Math percentile rank, a norm - referenced
score that provides a measure of a student's
math ability compared to other students in the same grade nationally, from the 46th
percentile to the 72nd
percentile, an increase of 26
percentile points.
The same first - graders
scored in the 92nd
percentile in
math.
Their first - grade
math scores had gone from the 38th
percentile to the 69th
percentile.