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Charles B Sinclair Middle School (Closed 2008)

300 West Chenango Avenue
Englewood, CO 80110

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Charles B Sinclair Middle School serves 312 students in grades 6-8.

The student-teacher ratio of 15:1 was equal to the Colorado state level of 15:1.

Minority enrollment was 33% of the student body (majority Hispanic), which was lower than the Colorado state average of 51% (majority Hispanic).

School Overview

Grades Offered

Grades 6-8

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Distribution of Students By Grade Trends
Grade	Charles B Sinclair Middle School
6	96
7	114
8	102

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Total Students

312 students

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Showing 1999–2025. Full 39-year historical data available below ↓

Total Students Trends (1987-2025)
Year	Charles B Sinclair Middle School
2025	312
2007	263
2006	312
2005	348
2004	343
2003	361
2002	363
2001	380
2000	410
1999	427
1998	436
1997	451
1996	487
1995	447
1994	422
1993	375
1992	311
1991	268
1990	270
1989	265
1988	270
1987	289

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Total Classroom Teachers

21 teachers

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Showing 1999–2025. Full 39-year historical data available below ↓

Total Classroom Teachers Trends (1987-2025)
Year	Charles B Sinclair Middle School
2025	21
2007	21
2006	25
2005	24
2004	23
2003	24
2002	26
2001	27
2000	32
1999	29
1998	29
1997	28
1996	30
1995	30
1994	23
1993	22
1992	18
1991	17
1990	15
1989	15
1988	14
1987	15

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School Rankings

This School

State Level (CO)

Student-Teacher Ratio

15:1

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Showing 1999–2025. Full 39-year historical data available below ↓

Student-Teacher Ratio Comparison (1987-2025)
Year	Charles B Sinclair Middle School	Colorado	Englewood School District No. 1 In The County Of Arapahoe
2025	15:1	15:1
2007	13:1	17:1	17:1
2006	12:1	16:1	18:1
2005	15:1	17:1	18:1
2004	15:1	16:1	18:1
2003	15:1	16:1	18:1
2002	14:1	17:1	17:1
2001	14:1	17:1	18:1
2000	13:1	17:1	18:1
1999	15:1	18:1	20:1
1998	15:1	18:1	20:1
1997	16:1	18:1	19:1
1996	16:1	18:1	20:1
1995	15:1	18:1	20:1
1994	18:1	19:1	21:1
1993	17:1	19:1	20:1
1992	17:1	18:1	21:1
1991	16:1	18:1	19:1
1990	18:1	18:1	20:1
1989	18:1	18:1	20:1
1988	19:1	18:1	22:1
1987	19:1	19:1	21:1

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American Indian

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Showing 1999–2025. Full 38-year historical data available below ↓

American Indian Student Percentage Comparison (1988-2025)
Year	Charles B Sinclair Middle School	Colorado	Englewood School District No. 1 In The County Of Arapahoe
2025	1%	1%
2007	2%	1%	3%
2006	1%	1%	3%
2005	1%	1%	3%
2004	2%	1%	3%
2003	2%	1%	2%
2002	3%	1%	2%
2001	3%	1%	2%
2000	3%	1%	2%
1999	2%	1%	2%
1998	1%	1%	2%
1997	2%	1%	2%
1996	2%	1%	2%
1995	1%	1%	2%
1994	2%	1%	2%
1993	1%	1%	2%
1992	2%	1%	2%
1991	1%	1%	2%
1990	3%	1%	1%
1989	1%	1%	1%
1988	3%	1%	2%

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Asian

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Showing 1998–2025. Full 38-year historical data available below ↓

Asian Student Percentage Comparison (1988-2025)
Year	Charles B Sinclair Middle School	Colorado	Englewood School District No. 1 In The County Of Arapahoe
2025	1%	3%
2007	1%	3%	2%
2006	1%	3%	2%
2005	2%	3%	2%
2004	2%	3%	2%
2003	1%	3%	2%
2002	1%	3%	2%
2001	1%	3%	1%
1999	1%	3%	1%
1998	2%	3%	1%
1997	2%	3%	1%
1996	3%	3%	2%
1995	2%	2%	2%
1994	2%	3%	2%
1993	1%	2%	1%
1992	1%	2%	2%
1991	2%	2%	2%
1990	1%	2%	2%
1989	1%	2%	1%
1988	1%	2%	2%

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Hispanic

27%

37%

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Showing 1999–2025. Full 38-year historical data available below ↓

Hispanic Student Percentage Comparison (1988-2025)
Year	Charles B Sinclair Middle School	Colorado	Englewood School District No. 1 In The County Of Arapahoe
2025	27%	37%
2007	25%	28%	30%
2006	27%	27%	29%
2005	27%	26%	28%
2004	23%	25%	25%
2003	21%	24%	23%
2002	18%	23%	21%
2001	17%	22%	19%
2000	17%	21%	17%
1999	14%	20%	17%
1998	10%	19%	15%
1997	12%	19%	14%
1996	13%	18%	14%
1995	12%	18%	13%
1994	11%	17%	13%
1993	10%	17%	12%
1992	12%	17%	12%
1991	7%	17%	11%
1990	8%	16%	11%
1989	7%	16%	10%
1988	6%	15%	11%

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Black

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Showing 1999–2025. Full 38-year historical data available below ↓

Black Student Percentage Comparison (1988-2025)
Year	Charles B Sinclair Middle School	Colorado	Englewood School District No. 1 In The County Of Arapahoe
2025	4%	5%
2007	5%	6%	4%
2006	4%	6%	4%
2005	4%	6%	4%
2004	5%	6%	5%
2003	2%	6%	4%
2002	3%	6%	4%
2001	2%	6%	3%
2000	3%	6%	3%
1999	2%	6%	3%
1998	2%	6%	3%
1997	1%	5%	2%
1996	2%	5%	2%
1995	2%	5%	2%
1994	3%	5%	2%
1993	3%	5%	2%
1992	4%	5%	1%
1991	4%	5%	2%
1990	1%	5%	2%
1989	1%	5%	2%
1988	1%	5%	1%

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White

67%

49%

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Showing 1999–2025. Full 38-year historical data available below ↓

White Student Percentage Comparison (1988-2025)
Year	Charles B Sinclair Middle School	Colorado	Englewood School District No. 1 In The County Of Arapahoe
2025	67%	49%
2007	67%	62%	61%
2006	67%	63%	62%
2005	66%	64%	63%
2004	68%	65%	65%
2003	74%	66%	69%
2002	75%	67%	71%
2001	77%	68%	75%
2000	77%	69%	76%
1999	81%	70%	77%
1998	85%	71%	79%
1997	83%	72%	81%
1996	80%	73%	80%
1995	83%	74%	81%
1994	82%	74%	81%
1993	85%	75%	83%
1992	81%	75%	83%
1991	86%	75%	83%
1990	87%	76%	84%
1989	90%	76%	86%
1988	89%	77%	84%

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All Ethnic Groups

33%

51%

0.48

0.63

View Data

Showing 1999–2025. Full 38-year historical data available below ↓

Diversity Score Comparison (1988-2025)
Year	Charles B Sinclair Middle School	Colorado	Englewood School District No. 1 In The County Of Arapahoe
2025	0.48	0.62
2007	0.49	0.54	0.54
2006	0.48	0.53	0.53
2005	0.49	0.52	0.53
2004	0.49	0.52	0.51
2003	0.41	0.51	0.48
2002	0.41	0.50	0.45
2001	0.38	0.49	0.41
2000	0.38	0.48	0.38
1999	0.33	0.47	0.39
1998	0.27	0.46	0.36
1997	0.30	0.45	0.34
1996	0.34	0.44	0.34
1995	0.30	0.42	0.32
1994	0.32	0.42	0.33
1993	0.27	0.41	0.30
1992	0.33	0.41	0.30
1991	0.26	0.41	0.29
1990	0.24	0.40	0.27
1989	0.19	0.40	0.25
1988	0.21	0.39	0.27

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Eligible for

40%

39%

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Showing 1999–2025. Full 37-year historical data available below ↓

Free Lunch Eligibility Comparison (1989-2025)
Year	Charles B Sinclair Middle School	Colorado	Englewood School District No. 1 In The County Of Arapahoe
2025	40%	39%
2007	41%	27%	35%
2006	40%	27%	36%
2005	33%	25%	32%
2004	34%	24%	27%
2003	24%	22%	19%
2002	22%	21%	18%
2001	19%	20%	15%
2000	19%	21%	17%
1999	21%	21%	16%
1998	22%	22%	19%
1997	20%	22%	17%
1996	22%	22%	20%
1995	22%	22%	19%
1994	20%	21%	19%
1993	24%	20%	21%
1992	16%	19%	20%
1991	20%	18%	17%
1990	21%	18%	16%
1989	17%	17%	15%

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Eligible for

View Data

Reduced-Price Lunch Eligibility Comparison (2000-2025)
Year	Charles B Sinclair Middle School	Colorado	Englewood School District No. 1 In The County Of Arapahoe
2025	6%	5%
2007	4%	7%	6%
2006	6%	6%	6%
2005	8%	6%	7%
2004	8%	6%	7%
2003	11%	7%	7%
2002	10%	7%	9%
2001	9%	7%	7%
2000	13%	7%	9%

Download Table: Download as CSV | Download as XML | Download as JSON

Download Full School Data: Full School Dataset XML | Full School Dataset JSON

Note: Data may not be displayed on any public-facing website or service that replicates or resembles a school search or review portal without prior written permission. See our Terms of Service.

School Statewide Testing

View Education Department Test Scores

School District Name

Englewood School District No. 1 In The County Of Arapahoe

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

Frequently Asked Questions

How many students attend Charles B Sinclair Middle School?

312 students attend Charles B Sinclair Middle School.

What is the racial composition of the student body?

67% of Charles B Sinclair Middle School students are White, 27% of students are Hispanic, 4% of students are Black, 1% of students are American Indian, and 1% of students are Asian.

What is the student-teacher ratio of Charles B Sinclair Middle School?

Charles B Sinclair Middle School has a student ration of 15:1, which is equal to the Colorado state average of 15:1.

What grades does Charles B Sinclair Middle School offer ?

Charles B Sinclair Middle School offers enrollment in grades 6-8

What school district is Charles B Sinclair Middle School part of?

Charles B Sinclair Middle School is part of Englewood School District No. 1 In The County Of Arapahoe.

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