What is a Data SGP?
A data sgp is a set of aggregated student growth and progress data that are used to help educators and parents better understand the academic progress of students over time. It can include individual-level measures like test scores and growth percentiles as well as aggregated data at a school or district level such as class size, attendance rates and graduation rates. These aggregated data sets can be useful for shaping classroom practices evaluating school/district performance and supporting broader research initiatives.
SGP utilizes the historical growth trajectories of Star examinees to map out what the range of potential growth trajectories for each student may lead to, including what growth is necessary for a student to reach/maintain proficiency. This information is then displayed in the Star Growth Report as Window Specific SGPs when the current or a previous year is selected during report customization (in the Timeframe drop-down list). This process provides teachers/parents with an estimate of what a student’s future performance might look like and helps them to develop instructional plans to address any problems that might be identified.
The SGP atmospheric observatory is one of the world’s premier climate research facilities. Located at the heart of the American Midwest, the 160-acre site houses in situ and remote-sensing instrument clusters and offers data management support for scientific projects from around the globe. In addition to its role as a research facility, the SGP also serves as an educational and training ground for students and early-career scientists from across the country and the world.
Using SGP data with sgpData is, in general, quite straight forward. However, it is important to spend a little time formatting the stat category columns (e.g., setting them to show three decimal places for BA and two for ERA and WHIP) before proceeding with the calculations. Taking a few minutes to do this ensures that the final analysis results make sense and are accurate. Please consult the SGP data analysis vignette for more comprehensive documentation on how to use sgpData and WIDE format data formats in general with the SGP package.
In sgpData, the first column, ID, provides the unique student identifier. The next five columns, GRADE_2013, GRADE_2014, GRADE_2015, and GRADE_2016, provide the scale scores associated with each of these years for the corresponding test. In most cases, students do not have 5 years of test data, in which case the missing value is shown as NA. Once the student has this data, the following two steps are needed to perform an SGP analysis:
