Centennial Middle School (Ranked Top 50% for 2025-26)

2205 Norwood Avenue
Boulder, CO 80304

( shown in map)

Top 50%

Serving 619 students in grades 6-8, Centennial Middle School ranks in the top 50% of all schools in Colorado for overall test scores (math proficiency is top 30%, and reading proficiency is top 30%).

The percentage of students achieving is 42% (which is higher than the Colorado state average of 33%). The percentage of students achieving is 52% (which is higher than the Colorado state average of 45%).

The student-teacher ratio of 19:1 is higher than the Colorado state level of 15:1.

Minority enrollment is 35% of the student body (majority Hispanic), which is lower than the Colorado state average of 50% (majority Hispanic).

Quick Facts (2025-26)

Grades: 6-8
Enrollment: 619 students
Student-Teacher Ratio: 19:1
Minority Enrollment: 35%
: Top 50% in CO
: 42% (Top 30%)
: 52% (Top 30%)
: 35-39% (Top 50%)
Source: National Center for Education Statistics (NCES), CO Dept. of Education

School Overview

Centennial Middle School's student population of 619 students has stayed relatively flat over five school years.

The teacher population of 32 teachers has declined by 5% over five school years.

Grades Offered

Grades 6-8
(No virtual instruction)

View Data

Distribution of Students By Grade Trends
Grade	Centennial Middle School
6	199
7	180
8	240

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Total Students

619 students

View Data

Total Students Trends Over Years (1987-2023)
Year	Centennial Middle School
2023	567
2022	596
2021	548
2020	634
2019	634
2018	628
2017	628
2016	630
2015	595
2014	581
2013	548
2012	554
2011	562
2010	627
2009	596
2008	583
2007	559
2006	588
2005	596
2004	641
2003	648
2002	678
2001	689
2000	675
1999	648
1998	622
1997	603
1996	594
1995	606
1994	611
1993	612
1992	560
1991	509
1990	506
1989	512
1988	519
1987	526

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Gender %

Total Classroom Teachers

32 teachers

View Data

Total Classroom Teachers Trends Over Years (1987-2023)
Year	Centennial Middle School
2023	33
2022	33
2021	32
2020	34
2019	34
2018	36
2017	36
2016	34
2015	34
2014	33
2013	31
2012	33
2011	35
2010	37
2009	37
2008	35
2007	32
2006	33
2005	34
2004	34
2003	36
2002	38
2001	37
2000	36
1999	37
1998	34
1997	33
1996	35
1995	40
1994	33
1993	37
1992	28
1991	28
1990	32
1989	29
1988	32
1987	28

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School Calendar

Last Day of School

Fri. May 22, 2026

School Rankings

Centennial Middle School ranks within the top 50% of all 1,748 schools in Colorado (based off of combined math and reading proficiency testing data).

The of Centennial Middle School is 0.51, which is less than the diversity score at state average of 0.62. The school's diversity has stayed relatively flat over five school years.

This School

State Level (CO)

#539 out of 1748 schools
(Top 50%)

View Data

Overall School Rank Trends Over Years (2012-2023)
Year	Centennial Middle School
2023	#539
2022	#636
2021	#639
2019	#474
2018	#555
2017	#367
2016	#491
2015	#565
2014	#543
2013	#539
2012	#499

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42%

33%

View Data

Math Proficiency Comparison Over Years (2012-2023)
Year	Centennial Middle School	Colorado	Boulder Valley School District No. Re2
2023	42%	33%	52%
2022	34%	32%	50%
2021	42%	33%	49%
2019	46%	35%	52%
2018	47%	35%	52%
2017	48%	33%	50%
2016	47%	33%	52%
2015	37%	31%	47%
2014	67%	57%	70%
2013	68%	57%	72%
2012	70%	56%	72%

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52%

45%

View Data

Reading and Language Arts Proficiency Comparison Over Years (2011-2022)
Year	Centennial Middle School	Colorado	Boulder Valley School District No. Re2
2022	52%	45%	63%
2021	47%	47%	67%
2019	55%	47%	63%
2018	47%	44%	52%
2017	53%	42%	58%
2016	49%	40%	58%
2015	45%	40%	59%
2014	78%	69%	81%
2013	78%	70%	82%
2012	79%	70%	82%
2011	93%	89%	94%

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(20-21)

35-39%

29%

Student-Teacher Ratio

19:1

15:1

View Data

Student-Teacher Ratio Comparison Over Years (1987-2023)
Year	Centennial Middle School	Colorado	Boulder Valley School District No. Re2
2023	17:1	16:1	17:1
2022	18:1	15:1	17:1
2021	17:1	15:1	17:1
2020	19:1	16:1	18:1
2019	19:1	16:1	18:1
2018	17:1	17:1	18:1
2017	17:1	17:1	18:1
2016	19:1	17:1	19:1
2015	18:1	17:1	19:1
2014	18:1	17:1	18:1
2013	18:1	17:1	18:1
2012	17:1	17:1	17:1
2011	16:1	17:1	18:1
2010	17:1	16:1	17:1
2009	16:1	16:1	17:1
2008	17:1	16:1	17:1
2007	17:1	17:1	17:1
2006	18:1	16:1	17:1
2005	18:1	17:1	17:1
2004	19:1	16:1	17:1
2003	18:1	16:1	17:1
2002	18:1	17:1	17:1
2001	19:1	17:1	18:1
2000	19:1	17:1	17:1
1999	18:1	17:1	19:1
1998	19:1	18:1	18:1
1997	18:1	18:1	19:1
1996	17:1	18:1	19:1
1995	15:1	18:1	18:1
1994	18:1	18:1	18:1
1993	16:1	18:1	18:1
1992	20:1	18:1	20:1
1991	18:1	18:1	19:1
1990	16:1	18:1	19:1
1989	17:1	18:1	19:1
1988	16:1	18:1	19:1
1987	19:1	19:1	21:1

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American Indian

n/a

View Data

American Indian Student Percentage Comparison Over Years (1992-2022)
Year	Centennial Middle School	Colorado	Boulder Valley School District No. Re2
2022	1%	1%
2014	1%	1%
2012	1%	1%
2010	1%	1%	1%
2009	1%	1%	1%
2005	1%	1%	1%
2004	1%	1%	1%
2003	1%	1%	1%
2001	1%	1%	1%
2000	1%	1%	1%
1999	1%	1%	1%
1998	1%	1%	1%
1996	1%	1%	1%
1995	1%	1%	1%
1994	1%	1%	1%
1993	1%	1%	1%
1992	1%	1%	1%

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Asian

View Data

Asian Student Percentage Comparison Over Years (1991-2023)
Year	Centennial Middle School	Colorado	Boulder Valley School District No. Re2
2023	2%	3%	7%
2022	3%	3%	6%
2021	4%	3%	6%
2020	3%	3%	6%
2019	3%	3%	6%
2018	4%	3%	6%
2017	4%	3%	6%
2016	6%	3%	6%
2015	5%	3%	7%
2014	4%	3%	6%
2013	4%	3%	7%
2012	4%	3%	6%
2011	6%	3%	6%
2010	6%	4%	7%
2009	7%	4%	7%
2008	8%	3%	7%
2007	7%	3%	7%
2006	4%	3%	6%
2005	3%	3%	6%
2004	4%	3%	6%
2003	3%	3%	6%
2002	3%	3%	5%
2001	3%	3%	5%
2000	3%	3%	5%
1999	2%	3%	5%
1998	2%	3%	5%
1997	3%	3%	4%
1996	2%	3%	5%
1995	2%	3%	4%
1994	2%	2%	4%
1993	2%	2%	4%
1992	2%	2%	4%
1991	2%	2%	4%

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Hispanic

26%

36%

View Data

Hispanic Student Percentage Comparison Over Years (1991-2023)
Year	Centennial Middle School	Colorado	Boulder Valley School District No. Re2
2023	27%	35%	20%
2022	25%	35%	20%
2021	26%	34%	20%
2020	24%	34%	19%
2019	24%	34%	19%
2018	22%	34%	20%
2017	22%	34%	20%
2016	21%	33%	19%
2015	24%	33%	18%
2014	24%	33%	18%
2013	24%	32%	17%
2012	25%	32%	17%
2011	23%	32%	17%
2010	19%	29%	15%
2009	17%	28%	15%
2008	16%	28%	15%
2007	15%	28%	14%
2006	11%	27%	14%
2005	6%	26%	13%
2004	5%	25%	13%
2003	4%	24%	13%
2002	5%	23%	13%
2001	4%	22%	12%
2000	4%	21%	11%
1999	4%	20%	10%
1998	4%	19%	10%
1997	3%	19%	10%
1996	4%	18%	10%
1995	3%	18%	9%
1994	4%	17%	9%
1993	4%	17%	9%
1992	5%	17%	8%
1991	6%	16%	8%

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Black

View Data

Black Student Percentage Comparison Over Years (1990-2022)
Year	Centennial Middle School	Colorado	Boulder Valley School District No. Re2
2022	1%	4%	1%
2021	1%	5%	1%
2020	1%	5%	1%
2019	1%	5%	1%
2014	1%	5%	1%
2013	1%	5%	1%
2012	1%	5%	1%
2010	2%	6%	2%
2009	2%	6%	1%
2008	1%	6%	1%
2007	1%	6%	2%
2006	1%	6%	2%
2005	1%	6%	2%
2004	2%	6%	2%
2003	2%	6%	2%
2002	2%	6%	2%
2001	2%	6%	2%
2000	1%	5%	2%
1999	1%	5%	2%
1998	2%	5%	2%
1997	2%	5%	2%
1996	2%	5%	2%
1995	1%	4%	2%
1994	1%	5%	1%
1993	2%	5%	2%
1992	4%	5%	2%
1991	3%	5%	2%
1990	2%	5%	2%

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White

65%

50%

View Data

White Student Percentage Comparison Over Years (1991-2023)
Year	Centennial Middle School	Colorado	Boulder Valley School District No. Re2
2023	66%	51%	66%
2022	65%	52%	67%
2021	63%	52%	67%
2020	66%	53%	68%
2019	66%	53%	68%
2018	67%	53%	69%
2017	67%	53%	69%
2016	67%	54%	69%
2015	64%	54%	69%
2014	66%	55%	70%
2013	67%	56%	70%
2012	65%	56%	71%
2011	66%	57%	71%
2010	72%	60%	75%
2009	73%	61%	76%
2008	75%	61%	76%
2007	77%	62%	76%
2006	84%	63%	77%
2005	89%	64%	78%
2004	88%	65%	78%
2003	90%	66%	78%
2002	90%	67%	79%
2001	90%	68%	80%
2000	91%	70%	81%
1999	92%	71%	82%
1998	91%	72%	82%
1997	92%	72%	83%
1996	91%	73%	82%
1995	92%	74%	84%
1994	92%	75%	85%
1993	91%	75%	84%
1992	88%	75%	85%
1991	88%	76%	85%

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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	Centennial Middle School	Colorado	Boulder Valley School District No. Re2
2023	5%	5%	6%
2022	5%	5%	6%
2021	6%	5%	6%
2020	6%	4%	6%
2019	6%	4%	6%
2018	7%	4%	5%
2017	7%	4%	5%
2016	6%	4%	5%
2015	7%	4%	5%
2014	4%	3%	5%
2013	4%	3%	5%

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All Ethnic Groups

0.51

0.62

View Data

Diversity Score Comparison Over Years (1991-2023)
Year	Centennial Middle School	Colorado	Boulder Valley School District No. Re2
2023	0.49	0.62	0.52
2022	0.52	0.61	0.51
2021	0.54	0.61	0.51
2020	0.51	0.60	0.50
2019	0.51	0.60	0.50
2018	0.50	0.60	0.48
2017	0.50	0.60	0.48
2016	0.50	0.60	0.48
2015	0.53	0.60	0.47
2014	0.52	0.59	0.47
2013	0.50	0.59	0.47
2012	0.53	0.59	0.47
2011	0.51	0.58	0.47
2010	0.44	0.55	0.41
2009	0.44	0.55	0.40
2008	0.41	0.55	0.39
2007	0.38	0.54	0.39
2006	0.28	0.53	0.37
2005	0.21	0.52	0.37
2004	0.22	0.52	0.36
2003	0.19	0.51	0.36
2002	0.19	0.50	0.36
2001	0.19	0.49	0.34
2000	0.17	0.47	0.32
1999	0.15	0.46	0.31
1998	0.17	0.46	0.30
1997	0.15	0.45	0.30
1996	0.17	0.45	0.30
1995	0.15	0.43	0.28
1994	0.15	0.41	0.27
1993	0.17	0.41	0.27
1992	0.22	0.40	0.27
1991	0.22	0.40	0.26

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Eligible for

32%

39%

View Data

Free Lunch Eligibility Comparison Over Years (1993-2023)
Year	Centennial Middle School	Colorado	Boulder Valley School District No. Re2
2023	25%	33%	21%
2022	23%	30%	17%
2021	24%	33%	17%
2020	20%	33%	18%
2019	20%	33%	18%
2018	20%	35%	18%
2017	20%	35%	18%
2016	20%	34%	18%
2015	22%	34%	17%
2014	24%	35%	16%
2013	21%	34%	16%
2012	22%	34%	16%
2011	19%	33%	15%
2010	19%	31%	14%
2009	19%	28%	14%
2008	19%	28%	14%
2007	19%	27%	15%
2006	12%	27%	14%
2005	4%	25%	11%
2004	2%	24%	11%
2003	2%	22%	9%
2002	2%	21%	9%
2001	3%	20%	9%
2000	3%	21%	9%
1999	3%	21%	9%
1998	4%	22%	10%
1997	4%	22%	9%
1996	4%	22%	10%
1995	4%	22%	10%
1994	6%	21%	9%
1993	6%	20%	10%

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Eligible for

View Data

Reduced-Price Lunch Eligibility Comparison Over Years (2001-2023)
Year	Centennial Middle School	Colorado	Boulder Valley School District No. Re2
2023	5%	7%	4%
2022	5%	6%	4%
2021	4%	7%	3%
2020	4%	8%	3%
2019	4%	8%	3%
2018	2%	8%	3%
2017	2%	8%	3%
2016	3%	7%	4%
2015	2%	7%	2%
2014	2%	7%	2%
2013	2%	7%	3%
2012	4%	7%	3%
2011	2%	7%	3%
2010	4%	7%	3%
2009	3%	7%	3%
2008	3%	7%	3%
2007	2%	7%	3%
2006	3%	6%	2%
2005	2%	6%	2%
2004	1%	6%	2%
2001	1%	7%	3%

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School Statewide Testing

School District Name

Boulder Valley School District No. Re2

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

Profile last updated: 02/09/2025

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Frequently Asked Questions

What is Centennial Middle School's ranking?

Centennial Middle School is ranked #539 out of 1,748 schools, which ranks it among the top 50% of public schools in Colorado.

What schools are Centennial Middle School often compared to?

Centennial Middle Schoolis often viewed alongside schools like Casey Middle School, Summit Middle Charter School, Southern Hills Middle School by visitors of our site.

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

42% of students have achieved math proficiency (compared to the 33% CO state average), while 52% of students have achieved reading proficiency (compared to the 45% CO state average).

How many students attend Centennial Middle School?

619 students attend Centennial Middle School.

What is the racial composition of the student body?

65% of Centennial Middle School students are White, 26% of students are Hispanic, 5% of students are Two or more races, 3% of students are Asian, and 1% of students are Black.

What is the student-teacher ratio of Centennial Middle School?

Centennial Middle School has a student ration of 19:1, which is higher than the Colorado state average of 15:1.

What grades does Centennial Middle School offer ?

Centennial Middle School offers enrollment in grades 6-8 (No virtual instruction).

What school district is Centennial Middle School part of?

Centennial Middle School is part of Boulder Valley School District No. Re2.

In what neighborhood is Centennial Middle School located?

Centennial Middle School is located in the Rural North Boulder neighborhood of Boulder, CO. There are 1 other public schools located in Rural North Boulder.