Transcript OVERVIEW OF STUDENT GROWTH PERCENTILE (SGP) Updated December 2014 Development of Student Growth Percentiles (SGPs) •New Jersey has taken a thoughtful, multi-year approach.

OVERVIEW OF STUDENT GROWTH
PERCENTILE (SGP)
Updated December 2014
Development of Student Growth Percentiles (SGPs)
•New Jersey has taken a thoughtful, multi-year approach to ensure SGP data is accurate and usable.
•SGP resources and trainings will continue to be provided for educators in 2014 and beyond.
•SGP data will continue to be available to authorized NJ SMART users in every district.
Evaluation Pilot
Advisory
Committee
Federal Mandate for Stimulus
Provides Feedback
Funds: States Must Calculate
District SGP Profile
on Usefulness of
“Student Growth”; Link
Reports Deployed
SGP Data
Teachers to Students
via NJ SMART
SY11-12 Teacher
Median SGP
Reports Provided to
Student SGPs
Pilot Districts for
Provided to All
Learning Purposes
Districts in NJ SMART
2010
NJ Adopts SGP
Methodology for
Calculating
Student Growth
2011
SGP Training
Begins for Districts;
SGP Video Released
2012
TEACHNJ Act
Passed; Growth
Measures Required
for Evaluation
SY12-13 Teacher
Median SGP Reports
Provided to All
Districts for Learning
Purposes and Data
Preview
2013
School SGPs Used in
School Performance
Reports per NJ’s
Federal ESEA Waiver
2014
2015
SY13-14 Teacher Median
SGP Reports Provided to
All Districts for Use in
Evaluations
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Student Growth Percentile Overview
Practice
Teacher
Practice
Based on
classroom
observations
Student Achievement
Student Growth
Objective
(SGO)
Set by teacher
and principal
Student Growth
Percentile
(SGP)
Based on
state assessment
performance
Summative
Rating
Overall evaluation
score
Less than 20 percent of
teachers
All teachers and
principals
STUDENT GROWTH PERCENTILES
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Calculating Student Growth Percentiles
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• Student Growth Percentiles
(SGPs) measure how much a
student has learned from one
year to the next compared to
students with a similar
performance history from across
the state (“academic peers”).
All students can show growth.
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Why Student Growth?
A student’s NJ ASK score does not tell the whole story.
NJ ASK Scale
250
Advanced Proficient
220
230
200
205
Proficient
160
150
100
165
Maria
Albert
Partially Proficient
Gr. 3
Gr. 4
Gr. 5
NJ ASK Scale Score by Grade
Under our current system, schools and parents might only notice that
Maria is “Proficient” and that Albert is “Partially Proficient.”
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SGP Considers Growth, Not Proficiency
Albert has taken the 5th-grade NJ ASK.
How does his score compare to those
of his academic peers?
Albert’s Prior
Scores

Academic Peers’
Prior Scores

3rd Gr.
150
3rd Gr.
≈150
4th Gr.
160
4th Gr.
≈160
5th Gr.
165
5th Gr.
???
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Determining an SGP
NJ ASK Score
Albert’s 5th-Grade NJ ASK Score
250
Advanced Proficient
200
Proficient
150
100
160
165
Partially Proficient
Gr.3
Albert’s Academic Peers’ NJ ASK Scores
250
Advanced Proficient
200
Proficient
150
100
Gr.4
Gr.5
200
29%
160
110
Partially Proficient
Gr.3
Gr.4
70%
Gr.5
Albert scored 165. His academic peers scored between 110 and 200.
How did Albert do in comparison to them?
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Determining an SGP
Albert’s Score

5th Gr.
165
Academic Peers’ Scores

5th Gr.
110 - 200
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SGP
1%
70%
99%
A comparison to his academic peers allows us to see that Albert actually
outperformed 70% of students who, up until this year, performed in a similar
manner to Albert. His SGP score is 70.
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Determining a Teacher’s mSGP Rating
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Albert’s SGP is 

arranged along

with the SGPs of

all his teacher’s
students from 
low to high.
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
Student
Hugh
Eve
Clarence
Clayton
Earnestine
Helen
Clinton
Tim
Jennifer
Jaquelyn
Lance
Roxie
Laura
Julio
Selena
Ashlee
Albert
Mathew
Marcus
Charles
Milton
SGP Score
12
16
22
24
25
31
35
39
44
46
51
53
57
61
65
66
70
72
85
89
97
Median SGP Score
Albert’s teacher receives an
effectiveness rating by taking
the median SGP score – in
this case, 51.
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mSGP Qualification and Weighting
To receive an mSGP score, teachers must:
2014-15
1. Teach a 4th–8th grade Language
Arts/4th-7th-grade* Math class, and
2. Be the teacher of record for at least
60% of the course prior to the
assessment, and
3. Have at least 20 separate students
with valid SGP scores who are
enrolled in the class for at least
70% of the school year before they
take the test.
•
About 15-20% of New Jersey
teachers will qualify
10%
45%
Student
Achievement
20%
Student Growth Percentile
Student Growth Objectives
70%
55%
Teacher
Practice
Teacher Practice
*SGP will not be calculated for 8th-grade Math for 2014-15.
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mSGP Technical Rules
Median this Year = 51
Student
Hugh
Eve
Clarence
Clayton
Earnestine
Helen
Clinton
Tim
Jennifer
Jaquelyn
Lance
Roxie
Laura
Julio
Selena
Ashlee
Albert
Mathew
Marcus
Charles
Milton
SGP Score
12
16
22
24
25
31
35
39
44
46
51
53
57
61
65
66
70
72
85
89
97
Median over 2 years = 56
In future years, teachers should
know that:
•
If two or three years of data are
available, the Department will use
the best available score — either the
teacher’s median score of their
current roster or the median of all
student scores over the years
available.
The SGP score will then be placed
on a 1.0 - 4.0 scale.
Student
SGP Score
Hugh
Eve
John
Charles
Annie
Clarence
Clayton
Earnestine
Jake
Helen
Rachel
Clinton
Tim
George
Amber
Jennifer
Jaquelyn
Bobby
Lance
Roxie
Mike
Mel
Laura
Regina
Marissa
Julio
Faye
Selena
Ashlee
Jackie
Courtney
Albert
Matthew
Laura
Jack
Jared
Rick
Marcus
Charles
Michelle
Molly
Milton
12
16
16
20
20
22
24
25
27
31
33
35
39
41
42
44
46
50
51
53
55
56
57
58
60
61
63
65
66
67
68
70
72
77
78
80
84
85
89
92
95
97
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mSGP Conversion from 1 - 99 to 1.0 - 4.0
mSGP Score
1 – 20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
Evaluation
Rating
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2
2.1
2.2
2.3
2.4
mSGP Score
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
Evaluation
Rating
2.5
2.5
2.6
2.6
2.7
2.7
2.8
2.8
2.9
2.9
3
3
3
3
3
mSGP Score
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
Evaluation
Rating
3
3
3
3
3
3
3.1
3.1
3.2
3.2
3.3
3.3
3.4
3.4
3.4
mSGP Score
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80 - 99
Evaluation
Rating
3.5
3.5
3.5
3.6
3.6
3.6
3.7
3.7
3.7
3.8
3.8
3.8
3.9
3.9
3.9
4
Based on the mSGP score, Albert’s teacher receives a rating of 3 for this
component, which is then combined with other evaluation components to get a
summative rating.
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SGP Conversion Chart Explained
mSGP Score
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
Evaluation
Rating
2.5
2.5
2.6
2.6
2.7
2.7
2.8
2.8
2.9
2.9
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.1
3.1
3.2
3.2
3.3
3.3
3.4
3.4
3.4
Why are all the values between 45 and 55 set
to the same score (3.0)?
• The Department believes that educators in
the middle of the mSGP distribution are
driving significant academic growth in their
students.
• Educators whose students achieve scores
in this range should be recognized by
receiving a rating on par with their impact.
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SGP Conversion Chart Explained
mSGP Score
Evaluation
Rating
1 – 20
1.0
21
22
23
24
25
26
27
28
29
30
31
32
33
34
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
Why are the values at the extreme
ends of the distribution, 1-20 = 1
in this case (and 80-99 = 4), set
to the same score?
• When more than half of a
teacher's students are in the
top 20 percentile points on the
SGP scale it is an indication of
very high growth.
• When more than half of a
teacher's students are in the
bottom percentile points this is
an indicator of low growth to be
considered with other
evidence.
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
Evaluation
Rating
3.5
3.5
3.5
3.6
3.6
3.6
3.7
3.7
3.7
3.8
3.8
3.8
3.9
3.9
3.9
80 - 99
4.0
mSGP Score
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SGP Conversion Chart Explained
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
Evaluation
Rating
3.5
3.5
3.5
3.6
3.6
3.6
3.7
3.7
3.7
3.8
3.8
3.8
3.9
3.9
3.9
80 - 99
4.0
mSGP Score
Why Decimals? Why Tenths?
• The use of decimals instead of whole
numbers enables the scale to
increase/decrease gradually, improving the
statistical efficiency of the conversion.
• This prevents large rating differences that
may not accurately reflect significant
differences in student learning.
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FIND OUT MORE:
www.nj.gov/education/AchieveNJ
http://www.nj.gov/education/AchieveNJ/teacher/percentile.shtml
[email protected]
609-777-3788