The federal government can meet mandates to foster the use of “scientifically based research” in education by aggressively promoting randomized, controlled trials, a report released last week argues.
Commonly used in medicine and pharmacology, such trials entail the random assignment of subjects to either an experimental group or a comparison group. Such investigations are less common—and sometimes controversial—in education and some other social-science fields.
The report by the Coalition for Evidence-Based Policy says that the federal government should make a concerted effort to sponsor more such studies in education and to prod states, schools, and districts to use the resulting findings. The coalition is sponsored by the Council for Excellence in Government, a nonprofit, better-government group based here.
The report, “Bringing Evidence-Driven Progress to Education,” is available from the Coalition for Evidence-Based Policy. (Requires Adobe’s Acrobat Reader.)
“There’s been no improvement in education over the last 30 years, despite a 90 percent increase in real public spending per pupil,” Jon Baron, the coalition’s executive director, contended. “What our coalition proposes in order to spark progress is a major shift in public policy toward funding and effectively using randomized trials.”
The 15-member panel that produced the report includes David Kessler, a former commissioner of the Food and Drug Administration; the education historian Diane Ravitch, who served as the Department of Education’s assistant secretary for research during the first Bush administration; the Nobel Prize-winning economist Robert Solow; Robert Boruch, a University of Pennsylvania education and statistics professor; and Robert Slavin, the Johns Hopkins University researcher who co- founded the Success for All program.
Though just a year old, the coalition already has attracted the attention of top federal education officials, several of whom attended a policy forum here last week that centered on the report’s recommendations. Financed by the Washington-based William T. Grant Foundation, the report, in fact, was the product of a collaboration between federal education officials and the coalition.
“We’re reviewing these recommendations right now with great interest, and we’re eager to learn more from them,” Secretary of Education Rod Paige told the group.
Rare Spotlight
For a topic as arcane as research methodology, such attention is rare. The subject has risen on the federal agenda, however, with the recent passage of two major pieces of education legislation: the “No Child Left Behind” Act of 2001 and the Education Sciences Reform Act of 2002.
Using similar language, the laws either require schools and states to use only programs developed with “scientifically based” research or require the Education Department to fund only such studies.
While the legislative definitions of “scientifically based” or “scientifically valid” research clearly favor randomly controlled studies, they also allow for other kinds of research methodologies, such as quasi-experimental studies.
Researchers in many fields view randomized, controlled studies as the “gold standard’’ for research on the effectiveness of particular approaches. But in education, some scholars caution that such studies can be expensive and might be inappropriate for answering some types of basic research questions.
Ethical issues also arise in randomized trials when researchers have to decide whether to withhold a promising teaching strategy from one group of children while using it with another.
Gerald R. Sroufe, the government-relations director for the American Educational Research Association, said the new report may “oversell” the role that randomized, controlled trials can play in improving schools.
|
“It’s important to remember that experimental methodology is not science,” he added. “It’s a tool of science.”
Mr. Baron, for his part, said his group had no intention of excluding other kinds of studies from getting federal support.
“A lot of other kinds of work is needed to know where you’re going to invest your money,” he said. But ultimately, he added, any strategy or program that the federal government hopes to endorse for large- scale use should be tested in randomized trials.
Recommendations
To foster more experimental work, the coalition recommends that the Education Department:
- Set aside more of its discretionary money for randomized trials.
- Dedicate a small percentage—perhaps 2 percent—of the money that states now get through the No Child Left Behind Act to paying for experiments. In fiscal 2002, that would amount to $400 million.
- In other grant programs, give grantees and applicants incentives to use results from randomized, controlled studies and to set aside their own discretionary funds to pay for more randomized experiments.
“What we learned in medicine was that the things we think we know, we don’t actually know until we subject them to randomized control trials,” Steven Goodman, an associate professor of oncology and biostatistics at the Johns Hopkins University school of medicine, told the forum.
In the 1940s, he noted, doctors held the widespread belief—based on evidence from non- randomized Australian studies—that premature infants could benefit from oxygen treatments. Medical professionals were so convinced of the efficacy of the practice, he said, that during randomized field trials of the practice, nurses would come in at night and turn up the oxygen in the babies’ cribs.
That 1954 experiment, however, showed that disproportionately high percentages of infants in the high-oxygen units were becoming blind as a result of the treatments. The practice was eventually discontinued.
“What looks unethical today can look lifesaving tomorrow,” Mr. Goodman said.
Assistant Secretary of Education Grover J. “Russ” Whitehurst, who heads the Education Department’s office of educational research and improvement, said the department has already begun channeling discretionary funds to pay for randomized experiments involving reading, community learning centers, the federal Even Start program, and 11 other areas.
The pace at which the federal government appears to be embracing such experiments alarmed some participants, who worry that its focus on methodology was too narrow.
“This is a bulldozer plowing through matchstick houses and, hopefully, what they build out of the ashes will be wonderful communities,” said Cathy Roller, the director of research and policy for the International Reading Association.
Mr. Slavin of Johns Hopkins noted, though, that the Education Department’s efforts are not unprecedented. The Comprehensive School Reform Demonstration Program, created by Congress in 1997, required states to either choose reform strategies from a federally approved list of proven programs or select another program with research evidence to back it up.
However, Mr. Slavin said, only a quarter of those grants have gone to programs, such as his, that have some experimental evidence attesting to their effectiveness.
“As time has gone on, the Department of Education has had this kind of language appear more often,” he said, referring to mandates for such evidence. “I think it’s very much yet to be seen whether it’s going to change anything.”
