SGP Student Growth Percentiles    About    Archive    Feed

About SGP

An R Package for the calculation & visualization of student growth percentiles and percentile growth trajectories/projections

The SGP Package (Betebenner, VanIwaarden, Domingue, Shang, 2014) is an open source package built for the open source R software environment (R Development Core Team, 2014). The classes, functions and data within the SGP package are used to calculate student growth percentiles and percentile growth trajectories/projections using large scale, longitudinal assessment data. The methodology uses quantile regression to estimate the conditional density associated associated with each student's achievement history. Percentile growth projections/trajectories are calculated using the coefficient matrices derived from the quantile regression analyses and specify the percentile growth required for students to reach future achievement targets.

Team Members

The SGP Package is crafted with :heart: by:

We love feedback and are happy to answer questions.

Install the latest stable release from CRAN

install.packages("SGP")
require(SGP)

Install latest development release from Github :octocat:

install.packages("devtools")
require(devtools)
install_github("SGP", "CenterForAssessment")
require(SGP)

To install from Github you might need: Windows: Rtools (http://cran.r-project.org/bin/windows/Rtools/), OS X: xcode (from the app store), Linux: apt-get install r-base-dev (or similar).

To use the SGP Package

The SGP Package Wiki contains instructions on how to prepare data and run SGP analyses.

Bibliography

Betebenner, D. W., VanIwaarden, A., Domingue, B., and Shang, Y. (2014). SGP: An R Package for the Calculation and Visualization of Student Growth Percentiles & Percentile Growth Trajectories.

R Development Core Team (2014). R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. 3-900051-07-0.

What's Jekyll?

Jekyll is a static site generator, an open-source tool for creating simple yet powerful websites of all shapes and sizes. From the project's readme:

Jekyll is a simple, blog aware, static site generator. It takes a template directory [...] and spits out a complete, static website suitable for serving with Apache or your favorite web server. This is also the engine behind GitHub Pages, which you can use to host your project’s page or blog right here from GitHub.

It's an immensely useful tool and one we encourage you to use here with Hyde.

Find out more by visiting the project on GitHub.