Data sgp is a tool that allows educators and districts to compare student growth to the average of their peers. The tool can be used to identify students who grew more than, less than, or the same amount as their peers, and it can help teachers and administrators understand which strategies are working well, and which may not be as effective.
The tool also provides a visual representation of relative growth, which can be useful for understanding the performance of individual students. For example, if a student has an SGP of 75, it means that the student grew more than 75 percent of his or her academic peers in that content area. This information can be used by educators to determine whether a student is progressing as expected and can be used by schools and districts to inform their educator evaluation systems.
SGPs are calculated based on trends in statewide performance data each year. Therefore, it is not uncommon for a significant portion of the state to experience more or less growth from one year to the next. For example, the Covid-19 pandemic caused a large shift in statewide growth data. However, most years the shift is less dramatic.
To avoid misunderstandings and misinterpretations, it is important to understand that SGP scores are not a measure of student achievement or a snapshot of a single test. They are a snapshot of relative student growth and can be compared over time using the tool. For example, if a sixth grade student scored 300 on the ELA exam this year, their SGP would be 70 points higher than the average sixth grade student in the state.
When comparing SGPs, it is important to take into account the growth of students from different starting point scores and the differing degree of difficulty in the statewide assessments. This is because SGPs are based on scale score growth, and the same scale score increase can mean a very different amount of relative growth for students with different starting point scores.
In order to ensure that the data SGPs are accurate and meaningful, the state requires a standard set of variables be included in the student assessment files used for SGP analyses. These variables are referred to as the SGP data set and include sgptData, sgptData_LONG, sgptData_WIDE, sgptData_INSTRUCTORNUMBER, sgptData_CONTENT_AREA and sgptData_YEAR. The SGP data set sgptData_LONG is required for creating growth and achievement plots with the lower level functions studentGrowthPercentiles and studentGrowthProjections. The SGPdata package includes higher level wrapper functions that utilize the long format data set.
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