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Fw: Lobbying on NCLB, July 10-12
- To: <arn-l@interversity.org>, <LiteracyForAll@yahoogroups.com>, <eddra@yahoogroups.com>
- Subject: Fw: Lobbying on NCLB, July 10-12
- From: "GERALD BRACEY" <gbracey1@verizon.net>
- Date: Mon, 02 Jul 2007 09:43:27 -0400
----- Original Message -----
From: "GERALD BRACEY" <gbracey1@verizon.net>
Here's a little something that the Department slipped into the public
domain with any fanfare: a report on the impact of choice and tutoring.
The study was conducted by researchers at the RAND corporation and
Mathematica Policy Research, two of the more reputable organizations
around. So far, only AP has picked up on it and spun it positively.
On choice the impact is simply stated: There isn't any.
How odd that this finding didn't make it to the AP story. The AP reporter
cites RAND researcher Ron Zimmerman as saying there are too few students
to draw conclusions. But the study reports data on 3,140 students with
reading scores and 2,944 students with math scores. As someone brought up
on group sizes of 25-40, that sure looks like plenty to me.
It's true that few eligibile students avail themselves of the choice
option. More whites than any other group (only 1.0% of all eligible white
students). And while choice students go to higher achieving, more racially
balanced schools, they don't get anything out of it in either reading or
mathematics.
Not too many students use the tutoring option either, 10.1% of whites,
16.9% of blacks, 11.6% of Hispanics, 13.1% of LEP students, 14.6% of SPED.
Those that did had lower test scores to start with than those who didn't.
The students show statistically significant gains in math and reading and
more gains if they were tutored two or more years. But...the gains are
quite small, .09 standard deviations in math, .08 in reading, .18 with two
or more years of math, .15 with two or more years of reading. The
outcomes are statistically significant because enormous numbers of
students, almost 50,000 are involved. The chances of finding
statistically significant results increase with increasing sample size.
For several districts, the samples are so large that effect sizes of 0.03
are significant. As we used to say when we were impudent graduate
students, significant but meaningless.
The effect in the two largest districts are tiny. District A (the RAND
people don't have permission of all districts to use their names), with
16,127 students, the effect in math is .04 standard deviations and .06 in
reading. There is no two-year data for A. In District C, the first year
impact is .03 in math and.02 in reading and these are statistically
significant!!! N = 22,757. The two year impact in math drops to .02 and
the reading rises to .05.
My reading: a couple of billion dollars a year essentially down the tubes.
Except for District F. Someone should take a special look at F. Its
first year math is .36 and reading .57 and second year is .63 and .70.
There are 933 in the first year group, and 68 in the second year.
The Districts are named, but not linked to data. For what it's worth, my
guess is that District A is Chicago--large numbers, lots of blacks and
District C is Los Angeles, large numbers, mostly Hispanic. I'd guess
district F is Long Beach, CA. Other districts are Baltimore,
Philadelphia, Washington, DC, Denver, Palm Beach, and San Diego.
Jerry Bracey
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