SGP Package
References
Nevada SGP Training Seminar
Damian W. Betebenner
National Center for the Improvement of Educational Assessment
Dover, NH
Reno, Nevada May 9th, 2011
Damian W. Betebenner SGP Training Seminar
SGP Package Functions
References Discussion Topics
SGP version 0.0-8.0 posted to CRAN on May 8th,
2011 [Betebenner, 2011].
Embedded stateData that contains Cutscores, CSEMs, Knots and
Boundaries, Performance Level labels and other sources of data for
Nevada
Ability to calculate confidence intervals at the individual and group
level based upon measurement error indicated by CSEMs
Ability to calculate student growth percentiles and two types of
percentile growth trajectories more simply and to calculate adequate
growth based upon assumptions of catching up/keep up with
proficient status.
Soon: Ability to produce summary bubble charts and individual
student reports.
Damian W. Betebenner SGP Training Seminar
SGP Package Functions
References Discussion Topics
Still has the same standard functions: studentGrowthPercentiles and
studentGrowthProjections.
With 5 higher level functions: prepareSGP, analyzeSGP,
combineSGP, summarizeSGP, prepareSGP, and (soon) reportSGP.
With 1 higher level function abcSGP.
Goal is to work with states to make use of package as easy as
possible — providing free/high quality analytics to state DOEs.
Damian W. Betebenner SGP Training Seminar
SGP Package Functions
References Discussion Topics
Data preparation requirements (wide versus long). sgpData and
sgpData_LONG
Special requirements for long data format: Factors, factors, and
more factors.
Output (and input): The SGP list object.
Summary level output: There can be a TON of it.
Individual Student Reports (vertical versus non-vertical scale)
Damian W. Betebenner SGP Training Seminar
SGP Package
References
References
Betebenner, D. W. (2011).
SGP: Student Growth Percentile and Percentile Growth
Projection/Trajectory Functions.
R package version 0.0-8.0.
Damian W. Betebenner SGP Training Seminar
About this copy
Nevada SGP Training Seminar — Nevada Department of Education, May 9, 2011.
This is an image-based copy of the original beamer slides; builds and animations are flattened.