The Relationship Between Student Transfers and District Academic Performance: Accounting for Feedback Effects

This paper draws attention to a subtle, but concerning, empirical challenge common in panel data models that seek to estimate the relationship between student transfers and district academic performance. Specifically, if such models have a dynamic element, and if the estimator controls for unobserved traits by including district-level effects, then model validity does not allow for a district's academic performance, in turn, to impact future transfers. Yet it seems reasonable that families, having access to publicly available aggregated information on standardized test results, seek to move their children to better-performing districts. In this paper, we demonstrate that, not only is such feedback quantitatively and qualitatively important, but also that allowing for such feedback substantially alters the estimated relationship between transfers and district performance.

Making a Connection between Student Achievement, Teacher Accountability, and Quality Classroom Instruction

The importance of standardized test results is becoming more prevalent in the structure of classroom instruction and the operation of schools throughout the nation due to pressure on educators and students from various levels of authority. This study looks at the relationship between classroom instruction and standardized test content and the effects this has on students, parents, and teachers. Seventeen fourth grade students, fourteen parents of fourth graders, and fifteen elementary teachers completed surveys. The study describes several positive and negative aspects to standardized tests, along with ideas of who is responsible for test performance. Standardized tests provide comparisons and are a tool for improvement. Too much emphasis is placed on high stakes test along with unrealistic expectations for some. The results indicate that ongoing assessment is effective for measuring student learning and teacher effectiveness.

Laser-Arc Hybrid Welding Properties of Aluminum Alloy 6005A

6005A extruded aluminum with good heat resistance, corrosion resistance, weldability, also has a relatively high strength, good overall performance, designed to meet the speed requirements of the body. Optional 6005A-T5 aluminum alloy sheet be 11 kinds of process parameters laser - arc hybrid welding, by comparison, select standardized test results carried out to optimize weld joints microstructure, mechanical properties of weld performance analysis.

Impact of Prematurity on Language Skills at School Age

Purpose The existing literature on language outcomes in children born prematurely focuses almost exclusively on standardized test scores rather than discourse-level abilities. The authors of this study looked longitudinally at school-age language outcomes and potential moderating variables for a group of twins born prematurely versus a control group of twins born at full term, analyzing both standardized test results and language sample data from the population-based Western Reserve Reading Project (WRRP; Petrill, Deater-Deckard, Thompson, DeThorne, & Schatschneider, 2006). Method Fifty-seven children born prematurely, at ≤32 weeks or <1,500 g, were compared with 57 children born at full term and were matched for age, gender, race, and parental education. Data included discourse-level language samples and standardized test results, collected at average ages 7, 8, and 10 years. The language samples were analyzed to yield a number of semantic and syntactic measures that were consolidated via factor analysis. Results Regression models showed significant differences between the 2 groups for standardized test results, although the mean score for both groups fell in the normal range. For the discourse-level language measures, however, differences never reached statistical significance. Parental education was significantly associated with improved standardized test scores. Conclusions These findings suggest that in the absence of frank neurological impairment, sophisticated semantic and syntactic skills may be relatively intact in the discourse-level language of children born prematurely. Implications for assessment, particularly the potential role of attention and executive function in standardized testing tasks, are reviewed.