Nevada SchoolPerformance Framework

Index Score Calculation

The index score for High School is comprised of:
  • Student performance on State assessments (status) and growth measures over time on the State assessments
  • Reductions in subgroup achievement gaps
  • Graduation Measures
  • College and Career Readiness
  • Other Indicators

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. Status/Growth Measure of Achievement

The Status/Growth Measure is a combination of status and growth performance measures. The measure includes the percent of students who were proficient on the State assessments as 10th graders, the percent of 11th grade students who were proficient on the assessments by spring of the 11th grade and the Median Growth Percentile or MGP for 10th graders. The School Median Growth Percentile is a summary of Student Growth Percentiles (SGP) for a school. SGP is a measure of student achievement over time that compares the achievement of similar groups of students from one assessment administration to the next. Separate calculations are made for Reading/ELA and Math for each of the three performance indicators.

2. Reductions in Achievement Gaps

High school achievement gaps are calculated as the difference between the subgroup proficiency rate and the statewide proficiency rate for the "all students" group. 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). Since this value is computed as a difference, negative numbers are possible. When this measure is reported as zero it means there is no difference between the proficiency of the subgroup and the statewide proficiency rate.

3. Graduation Measures

High school graduation is a combined measure of the school's graduation rate and a subgroup graduation gap analysis. Graduation gaps are defined as the difference between each subgroup's graduation rate and the statewide graduation rate. 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. College and Career Readiness

This indicator represents a combination of multiple measures of College and Career Readiness. It includes the percent of students requiring remediation in Nevada colleges and universities, the percent of students earning advanced diplomas, the percent of students passing Advanced Placement exams and the percent of students participating in the ACT or the SAT.

4. Other Indicators

Currently, Other Indicators is a measure of the student Average Daily Attendance or ADA for a school and the percent of 9th grade students who have earned at least five credits by the end of 9th grade.

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.
High School Index (100 points possible)
Status/Growth (30 points possible)
Math Reading
Overall % of 10th Grade Students Meeting Proficiency Expectations 5 5
Cumulative % of 11th Grade Students Meeting Proficiency Expectations 5 5
School Median Growth Percentile for 10th Grade (MGP) 5 5
Gap (10 points possible)
Cumulative % of 11th Grade IEP, ELL, FRL Proficiency Gap 5 5
Graduation (30 points possible)
Overall Graduation Rate 15
Graduation Rate Gap for IEP, ELL and FRL Students 15
College and Career Readiness (16 points possible)
% of Students in NV Colleges Requiring Remediation 4
% of Students Earning an Advanced Diploma 4
AP Proficiency 4
ACT/SAT Participation 4
Other Indicators (14 points possible)
Average Daily Attendance (ADA) 10
% of 9th Grade Students who are Credit Deficient 4