Jefferson Jr High School (Naperville CUSD 203 SCH DIST.), Illinois - School Profile in 2023-2024 School Year

Updated on August 8, 2025.

Jefferson Jr High School is a Middle in Naperville, IL. It currently serves 849 students (grades 06-08). The school is part of the Naperville CUSD 203 School District.

Below, we provide details about the school including the population per grade, the racial demography of the student population, the racial demography of the student population per gender/sex, and the racial demography per grade level.

You can see similar information for other schools in Naperville CUSD 203 School District and all schools in Illinois.

Other Details

School Type: Regular School
School Level: Middle
Number of Students:849
Number of Teachers: 69
Student/Teacher Ratio: 12.38

Location Info

Location: 1525 N Loomis St, Naperville, IL 60563
Mailing Address: 1525 N Loomis St, Naperville, IL 60563-1316
Phone: (630)420-6363
Data Source: NCES.
Student Population Per Grade
Items per page:
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Grade Population
Grade 6 319
Grade 7 252
Grade 8 278
Gender/Sex of Jefferson Jr High School Student Population
Items per page:
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Gender Population Percent of Population (%)
Male 402 47.35
Female 446 52.53
Race/Ethnicity Demography of Jefferson Jr High School Student Population
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Race/Ethnicity Population Percent of Population (%)
American Indian or Alaska Native 3 0.35
Asian 137 16.14
Black or African American 71 8.36
Hispanic/Latino 196 23.09
Two or more races 41 4.83
White 400 47.11
Male - Race/Ethnicity Demography of Student Population
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Race/Ethnicity Population Percent of Population (%)
American Indian or Alaska Native 1 0.25
Asian 64 15.92
Black or African American 36 8.96
Hispanic/Latino 98 24.38
Two or more races 21 5.22
White 182 45.27
Female - Race/Ethnicity Demography of Student Population
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Race/Ethnicity Population Percent of Population (%)
American Indian or Alaska Native 2 0.45
Asian 73 16.37
Black or African American 35 7.85
Hispanic/Latino 98 21.97
Two or more races 20 4.48
White 218 48.88

Race Demography Per Grade

The tables below shows the Race/Ethnicity of the student population per grade.
Grade 6 - Race/Ethnicity of Both Genders
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Race/Ethnicity Population Percent of Population (%)
American Indian or Alaska Native 2 0.63
Asian 51 15.99
Black or African American 25 7.84
Hispanic/Latino 72 22.57
Two or more races 18 5.64
White 151 47.34
Grade 7 - Race/Ethnicity of Both Genders
Items per page:
0 of 0
Race/Ethnicity Population Percent of Population (%)
American Indian or Alaska Native 1 0.40
Asian 47 18.65
Black or African American 24 9.52
Hispanic/Latino 53 21.03
Two or more races 12 4.76
White 114 45.24
Grade 8 - Race/Ethnicity of Both Genders
Items per page:
0 of 0
Race/Ethnicity Population Percent of Population (%)
Asian 39 14.03
Black or African American 22 7.91
Hispanic/Latino 71 25.54
Two or more races 11 3.96
White 135 48.56