Data sgp is the place to go for all the latest information on student growth indices. It leverages longitudinal student assessment data to produce statistical growth plots (SGPs) that measure students’ relative progress compared to their academic peers. SGPs are a useful tool for evaluating programs, schools, districts and states because they provide a more precise and objective measure of student performance than simple mean and median test scores.
SGPs can be generated using a variety of software tools, many of which are available online. The most popular of these are R and sgpData, both of which are open source, with extensive documentation and support resources. Both programs are well suited to educational assessment analysis, although they have other uses as well. The sgpData tool is easier to use for educators, and it includes a simple interface and graphical displays that make it easy to generate SGPs and compare student performance in a variety of ways.
In addition to producing SGPs, sgpData provides other key demographic and student level information such as student gender and socioeconomic status. SGPs can also be used to track students’ progress towards proficiency in a subject area. This information is valuable for determining instructional priorities and planning for future learning opportunities, and it can be useful for communicating the effectiveness of a program to parents.
SGPs are calculated by comparing a student’s current test score with the test scores of their academic peers from a previous year. For example, a student’s SGP in mathematics is the difference between her current test score and the SGP of the 75th percentile of students who took the same test last year. Separate SGPs are calculated for each grade and tested subject.
SGPs are also useful for comparing the progress of different students within a classroom, school or district. The sgpData spreadsheet can be easily customized to display SGPs for a specific window or set of grades/subjects, and it is possible to aggregate data by school, district or state to identify trends in student performance. A sgpData spreadsheet can also be used to create reports for individual students, which can be particularly helpful in identifying students who need additional assistance.