Nevada’s Growth Model

Richard N. Vineyard, Ph.D.Asst. Dir. Assessment

Nevada Dept. of Education

History

• 2008-10 NDE started work with districts to explore growth model options

• 2009 state legislature passed bill that required state to develop and adopt an accountability model to measure students’ academic growth

• 2009-10 state and districts work to develop the Nevada Growth Model (based on Colorado) which is based on the Student Growth Percentile (SGP) model developed by D. Betebenner.

Nevada Growth Model

• Adopted by State Board of Education in 2010• State wide coordination– Significant input from school districts

• State wide steering committee– Co-chaired by NDE staff and district Supt.

NVGM• Growth estimates from SGP• Uses data from NV CRT in reading & math for

grades 3-8, data starting from 2007-08 school year.

• Currently provides school level results for elementary and middle schools (Public View)– Data can be disaggregated by NCLB categories

• Student level results are available to teachers & administrators (Private view)

• High school results based on growth from grade 8 to grade 10, recently added to system

NVGM School view

NVGM - implementation

• Roll out state wide in 2011, first publication of statewide results for elementary & middle schools in August 2011.

• Clark Co. SD (Las Vegas) implemented district wide, with significant training at school level for use of individual student growth reports, including projections of growth needed to achieve or maintain proficiency over 3 years. [growth to target/ catch up, keep up, move up]

Research on SGP in Nevada

• Study on reliability of school classification based on SGP, WestEd 2011 & 2012– Based on classification into categories (typical,

below typical, above typical) for growth– Looked at stability of classification across years for

schools with at least 4 years of data– High variability in classification– Need for more studies

2008 CLASSIFICATION OF 426 SCHOOLS BY MEDIAN SGP IN MATHEMATICS

56 schools had SGP < 40

302 schools scored in the “Typical Growth” range (40 to 60) 68 schools had SGP > 60

When scores are not stable, decisions made one year can change the next year……

2009 CLASSIFICATIONS BY MEDIAN SGP IN MATHEMATICS

68 schools had SGP < 40

281 schools scored in the “Typical Growth” range (40 to 60) 77 schools had SGP > 60

NVGM today

• NVGM – written into Nevada’s application for waiver of some NCLB requirements as part of the data to be used in classifying schools in NV School Performance Framework (NSPF).

• Growth used as important component of NSPF – weight varies depending on grade level

Using Growth for accountability

• 2011 legislature passed a bill to require that the state develop and adopt a new educator evaluation process that uses data from student achievement as part of teacher and principal evaluation.

• Formation of Teachers and Leaders Council to oversee the development of this system.

• Adoption of new system required by July 2013.

Future of NVGM

• 2012 – New Superintendent for NDE• Challenges to continuing support for SGP

model• Anticipated evaluation of other growth

models to be required• Superintendent interest in use of VAM to

replace SGP, specific interest in EVAAS model (SAS)

What’s next

• Challenge of reconciliation of existing SGP model with possible VAM (EVAAS) model

• Challenge of possibly maintaining, supporting, and communicating results of two separate models– SGP for school accountability– EVAAS for teacher/Principal accountability

To follow the story …

• Dr. Richard N. VineyardAsst. Dir. Assessment, APACNV Dept of Education775 687-9195rvineyard@doe.nv.gov