Data sgp is an important new tool to help educators track student progress. It can also help identify which students are most likely to improve with the right type of teaching. However, there are many methods and metrics involved in data sgp, and the terminology can be confusing. In this article, we will break down the basics of how data sgp works.
SGPdata is a set of anonymized student-teacher lookup tables that associate teacher IDs with each student’s test record. It is available in both WIDE and LONG format, but for operational use year after year we strongly recommend that you format your data in the LONG format as it simplifies preparation and storage of analyses and the higher level SGP functions all assume this format.
How SGP works
Student growth percentiles (SGP) are measures of a student’s performance relative to other students, and are calculated by comparing a student’s current test score with their previous test score on the same assessment. SGPs are most useful for evaluating students who have been in the same classroom and subject area.
The SGP data can be used to identify which students are making the most progress, and which teachers are providing the best instruction. SGPs can also be used to compare the effectiveness of different schools and districts. However, it is important to note that the SGP data is only a snapshot in time, and does not necessarily reflect a student’s long-term achievement.
Despite the fact that SGPs are a good measure of student progress, it is important to recognize that they can be subject to biases. These biases can be difficult to quantify, but are important to understand when interpreting SGP data. SGP data may be influenced by factors such as prior achievement, student background, and class size.
In addition, SGPs are often aggregated in ways that may lead to misleading conclusions. For example, combining cohorts can distort the results by introducing a confounding variable. In addition, aggregating data by teacher can introduce another source of bias. This bias can be avoided by using value-added models that regress student test scores on teacher fixed effects, student prior test scores, and student background variables.
Despite the potential for bias in SGP data, it is still an important new tool for education. The BAA Secure Site has released SGPs for individual students (4th – 11th grade) to allow districts to begin to familiarize themselves with the system and learn how to interpret and apply it before high-stakes uses in educator evaluations in 2015/16.