MAT-8. Measuring Growth Using the Normal Curve Equivalent NCE. New Developments. MAT-8 vs. MAT-7 NCEs vs. GEs and NPR’s. National Heritage Academies (NHA) will now be using the Metropolitan Achievement Test, Eighth Edition (MAT 8) with Ready Reports software.
Measuring Growth Using the Normal Curve Equivalent
National Heritage Academies (NHA) will now be using the Metropolitan Achievement Test, Eighth Edition (MAT 8) with Ready Reports software.
This will be the first year NHA will use normal curve equivalents (NCEs) for teacher evaluations instead of grade equivalents (GEs) or national percentiles (NPRs) to measure achievement gains (growth) per class.
Grade Equivelents and NPRs will still be used to report test results to parents and the general public.
Linear vs. Non-Linear
SUMMARY: What are you trying to show?
STEP 1: Take PreTest Mean
STEP 2: Take PostTest Mean
STEP 3: Compare Pre-Test and Post-Test to determine gain or loss
STEP 4: Find “level” of PreTest Mean (Low, Average, High)
STEP 5: Compare gain or loss to target gain
STEP 6: Evaluate teacher based on percentage of target attained
Step 1-3 - Determining Gain or Loss…
Each class will have an average NCE gain or loss based on its PostTest mean
PostTest NCE – PreTest NCE = NCE Gain (or Loss)
If your PreTest Mean is:
Step 4 - Determining Levels…
Each class will be assigned to a “level” based on the PreTest Mean (see Table 1)
Step 6 - Converting to Percentage…
Each class average is then compared to it’s target gain…
Actual NCE Gain/Loss
Target NCE Gain
= % of Target Attained
And a percentage is calculated…
Converting to Teacher Appraisal Points
The percentage of the expected growth achieved is then converted into teacher evaluation points using the following scale
Teacher Appraisal Key
0 = Below 0% NCE score growth = less than 1 year growth
3 = 0% to 49% NCE score growth = 1 to 1.19 years growth
4 = 50% to 99% NCE score growth = 1.20 to 1.39 years growth
5 = 100% and above NCE growth = 1.4 years growth or greater
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