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Jefferson Jr High School

1525 N Loomis St
Naperville, IL 60563

( shown in map)

Top 20%

www.naperville203.org

Serving 849 students in grades 6-8, Jefferson Jr High School ranks in the top 20% of all schools in Illinois for overall test scores (math proficiency is top 30%, and reading proficiency is top 30%).

The percentage of students achieving is 36% (which is higher than the Illinois state average of 28%). The percentage of students achieving is 50% (which is higher than the Illinois state average of 30%).

The student:teacher ratio of 12:1 is lower than the Illinois state level of 13:1.

Minority enrollment is 53% of the student body (majority Hispanic and Asian), which is lower than the Illinois state average of 55% (majority Hispanic).

Quick Stats (2025)

Grades: 6-8
Enrollment: 849 students
Student:Teacher Ratio: 12:1
Minority Enrollment: 53%
: Top 20% in IL
: 36% (Top 30%)
: 50% (Top 20%)
: 73% (Top 20%)
Source: National Center for Education Statistics (NCES), IL Dept. of Education

Top Rankings

Jefferson Jr High School ranks among the top 20% of public schools in Illinois for:

School Overview

Jefferson Jr High School's student population of 849 students has stayed relatively flat over five school years.

The teacher population of 69 teachers has grown by 13% over five school years.

Grades Offered

Grades 6-8

View Data

Distribution of Students By Grade Trends
Grade	Jefferson Jr High School
6	319
7	252
8	278

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Total Students

849 students

View Data

Total Students Trends Over Years (1987-2023)
Year	Jefferson Jr High School
2023	817
2022	828
2021	810
2020	848
2019	848
2018	885
2017	885
2016	900
2015	849
2014	877
2013	888
2012	952
2011	890
2010	922
2009	910
2008	922
2007	933
2006	899
2005	913
2004	919
2003	951
2002	994
2001	950
2000	936
1999	884
1998	845
1997	820
1996	802
1995	778
1994	823
1993	821
1992	877
1991	911
1990	925
1989	928
1988	943
1987	944

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Gender %

Total Classroom Teachers

69 teachers

View Data

Total Classroom Teachers Trends Over Years (1990-2023)
Year	Jefferson Jr High School
2023	66
2022	66
2020	61
2019	61
2018	63
2017	63
2016	62
2015	60
2014	56
2013	67
2012	59
2011	59
2010	56
2009	58
2008	48
2007	54
2006	58
2005	58
2004	59
2003	62
2002	61
2001	59
2000	56
1999	52
1998	52
1997	48
1996	48
1995	49
1994	50
1993	52
1992	53
1991	54
1990	56

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School Calendar

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School Rankings

Jefferson Jr High School ranks within the top 20% of all 3,426 schools in Illinois (based off of combined math and reading proficiency testing data).

The of Jefferson Jr High School is 0.70, which is equal to the diversity score at state average of 0.70. The school's diversity has stayed relatively flat over five school years.

This School

State Level (IL)

#558 out of 3426 schools
(Top 20%)

View Data

Overall School Rank Trends Over Years (2011-2022)
Year	Jefferson Jr High School
2022	#558
2021	#814
2019	#378
2018	#410
2017	#419
2016	#380
2015	#463
2014	#493
2013	#412
2012	#872
2011	#819

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(20-21)

36%

28%

View Data

Math Proficiency Comparison Over Years (2010-2021)
Year	Jefferson Jr High School	Illinois	Naperville CUSD 203 School District
2021	36%	28%	51%
2019	50%	33%	64%
2018	50%	32%	65%
2017	49%	32%	63%
2016	50%	31%	62%
2015	46%	29%	59%
2014	78%	59%	83%
2013	77%	58%	80%
2012	91%	80%	91%
2011	91%	80%	92%
2010	89%	80%	92%

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50%

30%

View Data

Reading and Language Arts Proficiency Comparison Over Years (2011-2022)
Year	Jefferson Jr High School	Illinois	Naperville CUSD 203 School District
2022	50%	30%	63%
2021	43%	32%	58%
2019	66%	38%	72%
2018	63%	37%	65%
2017	68%	38%	69%
2016	63%	36%	67%
2015	58%	38%	67%
2014	75%	57%	80%
2013	79%	58%	80%
2012	91%	75%	89%
2011	91%	75%	90%

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73%

50%

Student : Teacher Ratio

12:1

13:1

View Data

Student-Teacher Ratio Comparison Over Years (1990-2023)
Year	Jefferson Jr High School	Illinois	Naperville CUSD 203 School District
2023	12:1	14:1	14:1
2022	13:1	14:1	14:1
2020	14:1	15:1	15:1
2019	14:1	15:1	15:1
2018	14:1	16:1	15:1
2017	14:1	15:1	15:1
2016	15:1	16:1	15:1
2015	14:1	16:1	15:1
2014	16:1	16:1	16:1
2013	13:1	13:1	12:1
2012	16:1	16:1	17:1
2011	15:1	16:1	17:1
2010	16:1	16:1	17:1
2009	16:1	16:1	17:1
2008	19:1	18:1	19:1
2007	17:1	17:1	18:1
2006	16:1	16:1	17:1
2005	16:1	16:1	18:1
2004	16:1	17:1	18:1
2003	15:1	16:1	18:1
2002	16:1	16:1	18:1
2001	16:1	16:1	17:1
2000	17:1	16:1	18:1
1999	17:1	16:1	18:1
1998	16:1	17:1	18:1
1997	17:1	17:1	19:1
1996	17:1	17:1	19:1
1995	16:1	17:1	18:1
1994	16:1	18:1	18:1
1993	16:1	18:1	18:1
1992	17:1	17:1	18:1
1991	17:1	17:1	18:1
1990	17:1	18:1	18:1

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American Indian

n/a

Asian

16%

View Data

Asian Student Percentage Comparison Over Years (1991-2023)
Year	Jefferson Jr High School	Illinois	Naperville CUSD 203 School District
2023	16%	6%	18%
2022	14%	5%	18%
2021	13%	5%	18%
2020	15%	5%	17%
2019	15%	5%	17%
2018	19%	5%	16%
2017	19%	5%	16%
2016	18%	5%	17%
2015	19%	6%	16%
2014	20%	5%	15%
2013	21%	5%	16%
2012	18%	4%	16%
2011	16%	5%	15%
2010	19%	5%	16%
2009	19%	5%	16%
2008	18%	5%	15%
2007	18%	5%	15%
2006	19%	5%	14%
2005	17%	5%	12%
2004	17%	4%	14%
2003	17%	4%	13%
2002	17%	4%	13%
2001	16%	4%	12%
2000	16%	3%	12%
1999	16%	3%	11%
1998	16%	3%	11%
1997	13%	3%	9%
1996	14%	3%	10%
1995	12%	3%	9%
1994	11%	3%	8%
1993	11%	3%	7%
1992	12%	3%	7%
1991	10%	3%	6%

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Hispanic

23%

28%

View Data

Hispanic Student Percentage Comparison Over Years (1991-2023)
Year	Jefferson Jr High School	Illinois	Naperville CUSD 203 School District
2023	24%	27%	12%
2022	25%	27%	12%
2021	23%	27%	11%
2020	20%	26%	11%
2019	20%	26%	11%
2018	21%	26%	11%
2017	21%	26%	11%
2016	21%	26%	10%
2015	17%	25%	10%
2014	15%	25%	9%
2013	13%	24%	9%
2012	11%	24%	8%
2011	12%	23%	8%
2010	10%	22%	6%
2009	8%	22%	5%
2008	8%	21%	5%
2007	7%	20%	4%
2006	6%	19%	3%
2005	6%	18%	4%
2004	6%	18%	3%
2003	6%	17%	3%
2002	6%	16%	3%
2001	5%	15%	3%
2000	4%	15%	2%
1999	4%	14%	2%
1998	4%	13%	1%
1997	4%	13%	1%
1996	4%	12%	1%
1995	4%	12%	1%
1994	4%	11%	1%
1993	2%	11%	1%
1992	2%	10%	1%
1991	3%	10%	1%

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Black

16%

View Data

Black Student Percentage Comparison Over Years (1991-2023)
Year	Jefferson Jr High School	Illinois	Naperville CUSD 203 School District
2023	9%	17%	5%
2022	8%	17%	5%
2021	7%	17%	5%
2020	6%	17%	5%
2019	6%	17%	5%
2018	6%	17%	5%
2017	6%	17%	5%
2016	6%	17%	4%
2015	7%	17%	4%
2014	7%	17%	5%
2013	8%	18%	5%
2012	9%	18%	5%
2011	8%	18%	5%
2010	10%	20%	5%
2009	8%	20%	5%
2008	8%	20%	4%
2007	7%	20%	4%
2006	6%	20%	3%
2005	5%	20%	3%
2004	4%	21%	3%
2003	3%	21%	3%
2002	4%	21%	3%
2001	3%	21%	2%
2000	3%	21%	2%
1999	4%	21%	2%
1998	4%	21%	2%
1997	5%	20%	3%
1996	4%	21%	2%
1995	3%	20%	2%
1994	3%	21%	2%
1993	2%	21%	2%
1992	2%	21%	2%
1991	2%	21%	2%

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White

47%

45%

View Data

White Student Percentage Comparison Over Years (1991-2023)
Year	Jefferson Jr High School	Illinois	Naperville CUSD 203 School District
2023	47%	45%	59%
2022	49%	47%	60%
2021	53%	47%	61%
2020	55%	48%	63%
2019	55%	48%	63%
2018	51%	49%	64%
2017	51%	49%	64%
2016	51%	49%	65%
2015	53%	49%	66%
2014	54%	50%	67%
2013	55%	50%	67%
2012	59%	51%	68%
2011	60%	51%	69%
2010	61%	53%	73%
2009	64%	53%	74%
2008	66%	54%	76%
2007	68%	55%	77%
2006	69%	56%	80%
2005	72%	57%	81%
2004	73%	57%	80%
2003	74%	58%	81%
2002	73%	59%	81%
2001	76%	60%	83%
2000	77%	61%	84%
1999	76%	62%	85%
1998	76%	63%	86%
1997	78%	64%	87%
1996	78%	64%	87%
1995	80%	65%	88%
1994	82%	65%	89%
1993	84%	65%	90%
1992	84%	66%	90%
1991	85%	66%	91%

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Hawaiian

n/a

Two or more races

View Data

Two or More Races Student Percentage Comparison Over Years (2013-2023)
Year	Jefferson Jr High School	Illinois	Naperville CUSD 203 School District
2023	4%	4%	6%
2022	4%	4%	5%
2021	4%	4%	5%
2020	4%	4%	4%
2019	4%	4%	4%
2018	3%	3%	4%
2017	3%	3%	4%
2016	4%	3%	4%
2015	4%	3%	4%
2014	4%	3%	4%
2013	3%	3%	3%

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All Ethnic Groups

0.70

View Data

Diversity Score Comparison Over Years (1991-2023)
Year	Jefferson Jr High School	Illinois	Naperville CUSD 203 School District
2023	0.69	0.70	0.60
2022	0.68	0.68	0.60
2021	0.65	0.68	0.59
2020	0.64	0.68	0.57
2019	0.64	0.68	0.57
2018	0.66	0.67	0.55
2017	0.66	0.67	0.55
2016	0.66	0.67	0.54
2015	0.65	0.67	0.53
2014	0.65	0.66	0.53
2013	0.64	0.66	0.52
2012	0.61	0.65	0.50
2011	0.60	0.66	0.50
2010	0.58	0.64	0.44
2009	0.55	0.64	0.43
2008	0.53	0.64	0.40
2007	0.50	0.63	0.39
2006	0.49	0.61	0.36
2005	0.45	0.61	0.32
2004	0.44	0.60	0.35
2003	0.42	0.59	0.34
2002	0.43	0.59	0.32
2001	0.40	0.58	0.30
2000	0.38	0.57	0.28
1999	0.39	0.56	0.27
1998	0.40	0.56	0.25
1997	0.37	0.54	0.24
1996	0.38	0.53	0.23
1995	0.35	0.53	0.22
1994	0.32	0.52	0.20
1993	0.28	0.52	0.19
1992	0.28	0.52	0.18
1991	0.27	0.52	0.18

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Eligible for

20%

43%

View Data

Free Lunch Eligibility Comparison Over Years (2003-2023)
Year	Jefferson Jr High School	Illinois	Naperville CUSD 203 School District
2023	21%	43%	13%
2022	21%	43%	13%
2021	21%	44%	13%
2020	20%	47%	12%
2019	20%	47%	12%
2018	19%	46%	12%
2017	19%	46%	12%
2016	22%	47%	13%
2015	24%	52%	15%
2014	19%	47%	11%
2013	18%	45%	11%
2012	6%	21%	4%
2011	16%	39%	9%
2010	17%	37%	4%
2009	12%	33%	2%
2008	11%	32%	2%
2007	9%	32%	2%
2006	8%	32%	2%
2005	8%	32%	1%
2004	8%	31%	1%
2003	7%	30%	1%

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Eligible for

View Data

Reduced-Price Lunch Eligibility Comparison Over Years (2002-2023)
Year	Jefferson Jr High School	Illinois	Naperville CUSD 203 School District
2023	5%	4%	3%
2022	5%	4%	3%
2021	5%	4%	3%
2020	6%	2%	3%
2019	6%	2%	3%
2018	4%	4%	3%
2017	4%	4%	3%
2015	1%	2%	1%
2014	4%	3%	2%
2013	4%	5%	2%
2012	14%	27%	7%
2011	4%	5%	2%
2010	3%	6%	1%
2009	3%	6%
2008	2%	6%	1%
2007	1%	6%
2006	1%	6%
2005	1%	5%
2004	1%	5%
2003	1%	5%
2002	1%	5%

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School Statewide Testing

View Education Department Test Scores

School District Name

Naperville CUSD 203 School District

Source: National Center for Education Statistics (NCES), IL Dept. of Education

Profile last updated: 02/09/2025

Frequently Asked Questions

What is Jefferson Jr High School's ranking?

Jefferson Jr High School is ranked #558 out of 3,426 schools, which ranks it among the top 20% of public schools in Illinois.

What schools are Jefferson Jr High School often compared to?

Jefferson Jr High Schoolis often viewed alongside schools like Kennedy Junior High School by visitors of our site.

What percent of students have achieved state testing proficiency in math and reading?

36% of students have achieved math proficiency (compared to the 28% IL state average), while 50% of students have achieved reading proficiency (compared to the 30% IL state average).

How many students attend Jefferson Jr High School?

849 students attend Jefferson Jr High School.

What is the racial composition of the student body?

47% of Jefferson Jr High School students are White, 23% of students are Hispanic, 16% of students are Asian, 9% of students are Black, and 5% of students are Two or more races.

What is the student:teacher ratio of Jefferson Jr High School?

Jefferson Jr High School has a student ration of 12:1, which is lower than the Illinois state average of 13:1.

What grades does Jefferson Jr High School offer ?

Jefferson Jr High School offers enrollment in grades 6-8

What school district is Jefferson Jr High School part of?

Jefferson Jr High School is part of Naperville CUSD 203 School District.

In what neighborhood is Jefferson Jr High School located?

Jefferson Jr High School is located in the Naperville Park District neighborhood of Naperville, IL. There are 35 other public schools located in Naperville Park District.

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Quick Stats (2025)

Grades: 6-8
Enrollment: 849 students
Student:Teacher Ratio: 12:1
Minority Enrollment: 53%
: Top 20%
: 36% (Top 30%)
: 50% (Top 20%)
: 73% (Top 20%)
Source: National Center for Education Statistics (NCES), IL Dept. of Education