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Written Expression-CBM
Description | Norms | Sample | Scoring Guide | Research

AIMSweb® Growth Table
Written Expression - Correct Writing Sequences
Multi-Year Aggregate
Through 2001-2007 School Year

    Fall Winter Spring  
Grade Percentile Num CWS Num CWS Num CWS ROI
1 90 1204 9 2963 14 2799 21 0.3
75 4 9 15 0.3
50 2 4 9 0.2
25 0 1 5 0.1
10 0 0 2 0.1
Mean 3 6 11
StdDev 5 6 8
2 90 4169 20 4299 30 4091 38 0.5
75 13 21 29 0.4
50 7 14 20 0.4
25 3 8 12 0.3
10 1 3 6 0.1
Mean 9 16 21
StdDev 9 12 13
3 90 4297 36 4604 45 4173 51 0.4
75 27 35 40 0.4
50 17 24 29 0.3
25 9 16 19 0.3
10 4 9 11 0.2
Mean 19 26 30
StdDev 13 14 15
4 90 3948 48 4566 55 4356 64 0.4
75 37 45 52 0.4
50 26 33 39 0.4
25 16 23 28 0.3
10 9 15 17 0.2
Mean 28 34 40
StdDev 16 16 19
5 90 3779 58 4382 63 3922 69 0.3
75 46 51 59 0.4
50 34 40 45 0.3
25 23 29 32 0.3
10 14 19 22 0.2
Mean 35 40 46
StdDev 17 17 19
6 90 2942 63 3443 70 3187 75 0.4
75 52 58 63 0.3
50 40 46 50 0.3
25 29 34 36 0.3
10 19 23 25 0.2
Mean 41 46 50
StdDev 17 18 19
7 90 2005 70 2184 76 2079 80 0.3
75 58 63 67 0.3
50 44 50 52 0.2
25 31 36 38 0.2
10 20 25 26 0.2
Mean 45 50 53
StdDev 20 20 21
8 90 2189 77 2313 77 1937 82 0.0
75 64 66 70 0.2
50 50 52 56 0.2
25 36 39 42 0.2
10 24 26 29 0.1
Mean 50 52 56
StdDev 20 20 21

Num = Number of Students CWS = Correct Writing Sequences ROI = Rate Of Improvement
ROI is Spring Score minus Fall Score (or Winter minus Fall) divided by 36 weeks (or 18 weeks)

Copyright © 2007 Harcourt Assessment, Inc. All Rights Reserved. Patent Pending.
AIMSweb CBM Measures Can Be Purchased:
As part of an AIMSweb System
Or in downloadable CBM Measure Sets
Or in downloadable CBM Measure Sets

AIMSweb® Growth Table
Written Expression - Total Words Written
Multi-Year Aggregate
Through 2001-2007 School Year

    Fall Winter Spring  
Grade Percentile Num TWW Num TWW Num TWW ROI
1 90 1608 15 2336 24 2447 33 0.5
75 10 18 26 0.4
50 6 12 19 0.4
25 2 8 13 0.3
10 1 4 9 0.2
Mean 7 14 20
StdDev 7 8 10
2 90 2214 33 3064 39 3065 48 0.4
75 24 30 39 0.4
50 16 22 29 0.4
25 10 15 21 0.3
10 5 9 14 0.3
Mean 18 23 30
StdDev 12 13 14
3 90 2744 46 3613 52 3287 59 0.4
75 36 43 49 0.4
50 26 33 38 0.3
25 17 24 28 0.3
10 10 16 19 0.3
Mean 27 34 39
StdDev 14 14 16
4 90 2489 58 3523 61 3389 71 0.3
75 48 50 58 0.3
50 36 40 45 0.3
25 26 30 34 0.5
10 18 22 24 0.6
Mean 37 41 47
StdDev 16 15 20
5 90 2295 64 2853 67 2426 71 0.1
75 53 57 61 0.1
50 42 46 50 0.2
25 31 35 39 0.3
10 22 27 29 0.7
Mean 42 46 50
StdDev 17 16 17
6 90 1795 67 2117 70 1678 78 0.3
75 55 60 67 0.3
50 44 49 55 0.3
25 33 38 42 0.3
10 23 28 32 0.3
Mean 45 49 55
StdDev 18 17 20
7 90 1611 70 1965 76 1363 82 0.3
75 58 64 69 0.2
50 46 51 57 0.3
25 34 40 44 0.3
10 23 29 32 0.4
Mean 47 52 57
StdDev 18 18 20
8 90 1413 72 1650 78 993 86 0.4
75 62 67 73 0.3
50 49 56 60 0.3
25 38 44 47 0.3
10 27 33 35 0.2
Mean 50 56 61
StdDev 18 18 21

Num = Number of Students TWW = Total Words Written ROI = Rate Of Improvement
ROI is Spring Score minus Fall Score (or Winter minus Fall) divided by 36 weeks (or 18 weeks)

Copyright © 2007 Harcourt Assessment, Inc. All Rights Reserved. Patent Pending.

AIMSweb CBM Measures Can Be Purchased:
As part of an AIMSweb System