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A case study of America's choice school reform in an elementary school in a large urban school district: how does this school reform influence student achievement in writing?
When a school system undergoes change, the superintendent puts forth a strategic plan that carefully outlines detailed plans and benchmark dates for expected improvements. The elementary school in this case study is a school located in a large urban school district that has undergone such change and has been charged to adopt a school reform model to meet its educational needs. The name of the school reform that this school adopted in this study is America�s Choice, which is a reform that places a heavy emphasis on writing. The model used to teach writing is the writer�s workshop. This two-year study reflects the changes that this elementary school implemented due to the implementation of the America�s Choice school reform. This case study sought to find out how the implementation of America�s Choice influenced student achievement in writing, the professional development activities, the instructional practices, the curriculum, and the organizational structure of this school, as perceived by the teachers and administrators. This case study design relied on three research strategies to determine the conclusions and findings. These three strategies included interviews, observations, and analyzing documents. A qualitative design was used to describe the voices, perceptions, and experiences of the participants. The recurring themes that were found in this study included professional learning communities, teacher meetings, coaching, standards, and teacher as facilitator. The conclusions, findings and implications stemmed from an analysis of the data, which heavily relied on the themes found
Comparative relationships of tested intelligence and achievement in seventh grade social studies as indicated by standardized tests and teachers' evaluation, 1967
Serum composition in the rat during the development of hypertension, 1974
The primary aim of this study was to determine changes in serum components during the development of high blood pressure (hypertension). One group of young Sprague-Dawley rats (120-160 gm) were made hypertensive by the use of the drug, 5 hydroxytryptamine (5-HT) in con-junction with the hormone, estradiol benzoate. In a second group (150- 165 gm), hypertension was induced by salt-loading after unilateral nephrectomy. The drug treated rats received four intraperitoneal in-jections of 5-HT (50 mg/Kg body weight) in physiological saline and, at the same time, four injections of estradiol benzoate (0.4 ug) in sesame oil at regular intervals. The control rats received four injections of saline and sesame oil. Sodium chloride (1.0%) was made available as drinking water ad libitum. In the salt-loading experiment, the right kidneys were removed and sodium chloride (1.5%) was given to the ex-perimental rats to drink while tap water was given to the controls. Periodic determination of the blood pressure, fluid intake, and urine output showed that both the 5-HT rats and the salt-loaded rats had significant increases in blood pressure, fluid intake, and urine output than control groups. The control groups in both experiments gained more weight than the experimental rats. The 5-HT rats became hypertensive (blood pressure above 150 mm Hg) between the 20th and 45th day while the salt-loaded rats became hypertensive between the 10th and 50th day. Studies on serum chemistry showed that there was no significant difference between the blood urea nitrogen (BUN) and total protein of 5-HT rats and their controls while the salt loaded rats had significantly lower BUN and total protein than the controls. The results of this study show that the 5-HT rats were able to regulate excess saline which enabled some of the serum constituents to remain within normal limits. The results also show that salt-loaded rats can tolerate the development of hypertension by lowering the con�centration of the BUN and total protein thereby decreasing the osmotic pressure and increasing the glomerular filtration in order to eliminate excess saline