9th Grade Exclusion Rate
The 9th Grade exclusion rate was calculated by dividing 9th-grade exclusion counts by 9th-grade enrollment and multiplying by 100. The 9th-grade penalty is the 9th-grade exclusion rate. The 9th-grade exclusion rate is the number of expulsions plus out-of-school suspensions plus Emergency Removal by District Personnel plus Removal by Hearing officer. [8]
Of the 1176 schools in the database, 806 (68.5% ) had enrollment in the 9th grade. Of the 806 districts with 9th grades, 706 ( 87.6%) had both reported discipline occurrences and published enrollment account. The average adjusted enrollment was 187, and average exclusion was 42.1
|
Enrollment Adjusted Ninth Grade |
Exclusion Ninth Grade Total Count |
|
|
Mean |
187.0 |
42.7 |
|
Median |
110.6 |
12.0 |
|
Minimum |
5 |
0 |
|
Maximum |
4602 |
3691 |
The 9th Grade exclusion rate. The mean (average) was 17.4 exclusions per 100 students; the median (midpoint) exclusion rate was 9.5 per 100 students; the lowest was 0 per 100 students, and the highest was 298.1 exclusions per 100 students.
|
9th Grade Exclusion Rate |
||||
|
Number of Districts |
Mean |
Median |
Minimum |
Maximum |
|
706 |
17.4 |
9.5 |
0.0 |
298.0 |
Community (Charter) Schools had a higher mean exclusion rate (36.7) than Public Districts (14.2). That is, community (charter schools) had 2.6 times more exclusions per 100 students. This difference was significant (p<.000).
|
Exclusion 9th Grade Rate by Organization Type |
||||||
|
Organization Type |
N |
% of Total N |
Mean |
Median |
Minimum |
Maximum |
|
Community (Charter) School |
100 |
14.2% |
36.7 |
26.4 |
0.0 |
298.0 |
|
Public District |
606 |
85.8% |
14.2 |
8.7 |
0.0 |
91.0 |
|
Total |
706 |
100.0% |
17.4 |
9.5 |
0.0 |
298.0 |
|
Sum of Squares |
df |
Mean Square |
F |
Sig. |
||
|
43569.035 |
1 |
43569.035 |
79.784 |
0.000 |
||
The 9th Grade exclusion rate varied by the Typology of Public Districts. Urban Schools with very High Student Poverty & Very Large Student Population (Type 8) had an average of 60.3 exclusions per 100 students compared to 7.1 average for Suburban schools (Type 6). That is Type 8 schools were 8.5 times more likely to exclude, suspend, or have a student removed than Type 6. This difference was significant (p<.000).
|
Exclusion 9th Grade Rate * Typology of Public Districts |
||||||
|
Typology of Public Districts |
Number of Districts |
% of Total Number of Districts |
Mean |
Median |
Minimum |
Maximum |
|
Type 1: Rural - High Student Poverty & Small Student Population |
123 |
20.3% |
11.3 |
9.2 |
0.0 |
77.8 |
|
Type 2: Rural - Average Student Poverty & Very Small Student Population |
105 |
17.4% |
8.2 |
5.2 |
0.0 |
40.5 |
|
Type 3: Small Town - Low Student Poverty & Small Student Population |
110 |
18.2% |
9.3 |
6.8 |
0.0 |
64.6 |
|
Type 4: Small Town - High Student Poverty & Average Student Population Size |
89 |
14.7% |
16.0 |
11.9 |
0.0 |
65.4 |
|
Type 5: Suburban - Low Student Poverty & Average Student Population Size |
77 |
12.7% |
14.3 |
10.6 |
0.0 |
57.5 |
|
Type 6: Suburban - Very Low Student Poverty & Large Student Population |
46 |
7.6% |
7.1 |
6.3 |
0.0 |
29.4 |
|
Type 7: Urban - High Student Poverty & Average Student Population |
47 |
7.8% |
42.5 |
40.1 |
3.7 |
91.0 |
|
Type 8: Urban - Very High Student Poverty & Very Large Student Population |
8 |
1.3% |
60.3 |
62.1 |
24.7 |
81.0 |
|
ANOVA |
||||||
|
Sum of Squares |
df |
Mean Square |
F |
Sig. |
||
|
64861.997 |
7 |
9266.000 |
56.817 |
0.000 |
||
