Reinforced by policies, charters segregate schools
2021-03-01
(Press-News.org) ITHACA, N.Y. - The expansion of charter schools in the 2000s led to an increase in school segregation and a slight decline in residential segregation, according to new research from Cornell University providing the first national estimates of the diverging trends.
According to the study, the average district to expand charter school enrollment between 2000 and 2010 experienced a 12% increase in white-Black school segregation and a 2% decrease in white-Black residential segregation.
The patterns moved in opposite directions, the research found, because charter schools - which receive public funds but operate independently - weaken the traditional link between neighborhood and school assignment, allowing families to choose more racially homogenous schools regardless of where they live.
The findings highlight education policy's influence beyond schools and offer a "cautionary lesson" about continued charter expansion without efforts to limit racial sorting by families, according to lead author Peter Rich.
Understanding charter schools' effects on segregation is critical, because they represent an increasingly popular educational reform, the researchers said. Charter school enrollment has quadrupled since 2000, serving nearly 6% of students in 2015-2016, and is expected to continue growing and gaining influence.
The researchers analyzed more than 1,500 metropolitan school districts to examine what happened when school choice decoupled neighborhood and school options, using data from the census and the National Center for Education Statistics' Common Core of Data.
The researchers said their findings reveal school and residential segregation as "more like eddies in a stream, circling and reinforcing each other via policies and preferences."
The analysis did not find that charter school affected white-Hispanic segregation in schools, because Hispanic students on average attend more diverse charter schools. White-Hispanic segregation did fall as charter enrollment grew.
Though the reductions in residential segregation were "nontrivial," the researchers said, policy makers should not see school choice as a tool for achieving resident diversity, given how it exacerbated school segregation.
INFORMATION:
The study, "Segregated Neighborhoods, Segregated Schools: Do Charters Break a Stubborn Link?" published March 1 in the journal Demography.
For additional information, see this Cornell Chronicle story.
-30-
ELSE PRESS RELEASES FROM THIS DATE:
2021-03-01
Scientists from the Stanley Manne Children's Research Institute at Ann & Robert H. Lurie Children's Hospital of Chicago found that a region within the DNA of the cancer-promoting GLI1 gene is directly responsible for regulating this gene's expression. These findings, published in the journal Stem Cells, imply that this region within GLI1 could potentially be targeted as cancer treatment, since turning off GLI1 would interrupt excessive cell division characteristic of cancer.
"From previous research, we know that GLI1 drives the unrelenting cell proliferation that is responsible for many cancers, and that this gene also stimulates its own expression," says co-senior author Philip Iannaccone, MD, PhD, Professor Emeritus at the Manne Research Institute at Lurie Children's and Northwestern ...
2021-03-01
Scientists from Far Eastern Federal University (FEFU) together with Russian and German colleagues, continue studying antitumor compounds synthesized based on bioactive molecules isolated from a sea sponge. One of them fights cancer cells resistant to standard chemotherapy, and at the same time has an interesting dual mechanism of action. A related article appears in Marine Drugs.
Scientists have tested the biological effect of the marine alkaloid 3,10-dibromofascaplysin on various prostate cancer cells, including those resistant to standard docetaxel-based chemotherapy. ...
2021-03-01
CORVALLIS, Ore. - In tropical oceans, a combination of sunlight and weak winds drives up surface temperatures in the afternoon, increasing atmospheric turbulence, unprecedented new observational data collected by an Oregon State University researcher shows.
The new findings could have important implications for weather forecasting and climate modeling, said Simon de Szoeke, a professor in OSU's College of Earth, Ocean, and Atmospheric Sciences and the lead author of the study.
"The ocean warms in the afternoon by just a degree or two, but it is an effect that has largely been ignored," said de Szoeke. ...
2021-03-01
HARWELL, UK (1 March 2021) Scientists based at the University of Oxford as part of the Faraday Institution CATMAT project researching next-generation cathode materials have made a significant advance in understanding oxygen-redox processes involved in lithium-rich cathode materials. The paper, published in Nature Energy, proposes strategies that offer potential routes to increase the energy density of lithium-ion batteries.
"In the ever more difficult quest to make incremental improvements to Li-ion battery energy density, being able to harness the potential of oxygen-redox cathodes and the bigger improvements they offer relative to the nickel rich cathodes in commercial use today is potentially significant," Prof Peter Bruce, University ...
2021-03-01
Childhood cancer and its treatment can result in cognitive struggles. Scientists atSt. Jude Children's Research Hospital are studying the risk factors. They looked at social and economic issues in children with brain tumors treated with radiation.
These patients have the greatest risk of cognitive problems. Scientists followed a group of St. Jude patients for 10 years. The children all had conformal radiation therapy.
For each patient, researchers looked at certain factors. These included the parent's job, education level, and whether it was a single parent home. The children were from different backgrounds.
The findings show social and economic status is linked to IQ, academics, attention ...
2021-03-01
Amsterdam, March 1, 2021 - Comfort is a daily human experience central to the perception of our environment and the continuous processing of sensory input. Environmental factors such as smell, temperature and light can influence comfort, as can our interaction with products, such as the design of a chair or a mattress. Increasingly, researchers investigating the science of comfort and discomfort are focusing on the role of human behavior. A special supplement to the journal WORK presents the latest advances, from optimal seat design in offices and transportation to the influence of smell on comfort and the interaction between time and comfort.
"This special supplement adds unique findings to comfort knowledge. ...
2021-03-01
A novel targeted immunotherapy approach developed by researchers at the Ludwig Center, the Lustgarten Laboratory, and Bloomberg~Kimmel Institute for Cancer Immunotherapy at the Johns Hopkins Kimmel Cancer Center employs new antibodies against genetically altered proteins to target cancers.
The researchers targeted their immunotherapy approach to alterations in the common cancer-related p53 tumor suppressor gene, the RAS tumor-promoting oncogene or T-cell receptor genes. They also tested the therapy on cancer cells in the laboratory and in animal tumor models. Their findings are reported in three related studies published March 1 in Science Immunology, Science and Science Translational Medicine.
Two ...
2021-03-01
Scientists have identified that the COVID-19 virus could be transmitted through faecal contaminated river water.
A team of researchers, including water quality, epidemiology, remote sensing and modelling experts, led by Dr Jamie Shutler at the University of Exeter, have developed a fast and simple way to assess the potential risk of water-borne transmission of the COVID-19 virus, posed by sewage spills into open and closed freshwater networks.
The new study, published in the journal Environmental Science and Technology - Water, identifies the relative risk of viral transmission by sewerage spills, across 39 different counties.
The study used information on the environment, a population's infection rate, and water usage to calculate the potential potency of ...
2021-03-01
Plants grow towards the light. This phenomenon, which already fascinated Charles Darwin, has been observed by everyone who owns houseplants. Thus, the plant ensures that it can make the best use of light to photosynthesize and synthesize sugars. Similarly, the roots grow into the soil to ensure that the plant is supplied with water and nutrients.
These growth processes are controlled by a hormone called "auxin", which plays a key role in the formation of polarity in plants. To do this, auxin is transported in the plant body polar, from the shoot through the plant body into the roots. In this process, a family of polar transport proteins distributes the auxin throughout the plant. To ...
2021-03-01
The cover for issue 49 of Oncotarget features Figure 4, "CART-Tree analysis for overall survival in IMDC intermediate risk group," by Guida, et al.recently published in "Identification of international metastatic renal cell carcinoma database consortium (IMDC) intermediate-risk subgroups in patients with metastatic clear-cell renal cell carcinoma" which reported that as these patients have different prognosis, the aim of this study is to better characterize IR patients in order to better tailor the treatment.
A multivariable Cox model with backward selection procedure and a Classification and Regression Tree analysis were performed to identify which prognostic factors were associated to OS in IR patients.
Median OS for patients with ...
LAST 30 PRESS RELEASES:
[Press-News.org] Reinforced by policies, charters segregate schools