Nevada SchoolPerformance Framework

Index Score Calculation

The index score for Elementary and Middle Schools is comprised of:
  • Student growth measures over time on the State assessments
  • Student achievement (status) on the State assessments
  • Reductions in subgroup achievement gaps
  • Other Indicator

Performance Indicators

The No Child Left Behind Act (NCLB) requires that all groups of children reach proficiency in Reading and Math. The performance indicators in 2012 are:

1. Growth Measure of Achievement

Student Growth is a measure of performance on the State assessments over time. Students who perform similarly on the first administration of the test are compared to each other after the second. Each student's relative performance to each other is measured as a percentile. This value is called the Student Growth Percentile or SGP. Separate SGP determinations are made for Reading/ELA and Math.

2. Status Measure of Achievement

Status is a measure of student performance based on a single administration of the State assessment. Cut scores are set that determine the achievement level needed to be proficient on the assessments. Status Measures of Achievement are determined by calculating the percent of students in the school who met or exceeded standards on the State assessments. School-level calculations are made for Reading/ELA and Math.

3. Reductions in Achievement Gaps

Student achievement targets to meet proficiency on the State assessments within three years are determined for each elementary and middle school student. These targets are called Adequate Growth Percentiles or AGP. Reduction in Achievement Gap is based on the percent of IEP, ELL or FRL students who meet their AGP targets. Separate calculations are made for Reading/ELA and Math. Subgroups are identified as students who are on an Individual Education Plan (IEP), are English Language Learners (ELL) or receive Free or Reduced-Price Lunch (FRL).

4. Other Indicator

Currently, the Other Indicator is a measure of the student average daily attendance or ADA for a school.

How is the NSPF index score computed?

The Nevada School Performance Framework index score is a composite of several performance indicators, each worth a predetermined maximum number of points. Each performance indicator is itself a composition of multiple factors. The index score is the sum of all of these factors that is then measured against the star rating criteria. Details regarding the performance indicators and their factors can be found on the "Index Point Criteria" page.
Elementary/Middle School Index (100 points possible)
Growth (40 points possible)
Math Reading
School Median Growth Percentile (MGP) 10 10
Overall % of Students Meeting Adequate Growth Percentile (AGP) 10 10
Status (30 points possible)
Overall % of Students Meeting Proficiency Expectations 15 15
Gap (20 points possible)
% of IEP, ELL and FRL Students Meeting AGP 10 10
Other Indicator (10 points possible)
Average Daily Attendance (ADA) 10