Thunder Mountain Elementary School (Ranked Bottom 50% for 2025-26)

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Thunder Mountain Elementary School

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Bottom 50%

Serving 441 students in grades Prekindergarten-5, Thunder Mountain Elementary School ranks in the bottom 50% of all schools in Colorado for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).

The percentage of students achieving is 19% (which is lower than the Colorado state average of 33%). The percentage of students achieving is 29% (which is lower than the Colorado state average of 45%).

The student-teacher ratio of 15:1 is equal to 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: Prekindergarten-5
Enrollment: 441 students
Student-Teacher Ratio: 15:1
Minority Enrollment: 35%
: Bottom 50% in CO
: 19% (Btm 50%)
: 29% (Btm 50%)
Source: National Center for Education Statistics (NCES), CO Dept. of Education

School Overview

Thunder Mountain Elementary School's student population of 441 students has declined by 15% over five school years.

The teacher population of 29 teachers has stayed relatively flat over five school years.

Grades Offered

Grades Prekindergarten-5
(No virtual instruction)

View Data

Distribution of Students By Grade Trends
Grade	Thunder Mountain Elementary School
Pre-K	43
Kind	58
1	58
2	74
3	68
4	71
5	69

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Total Students

441 students

View Data

Total Students Trends Over Years (1987-2023)
Year	Thunder Mountain Elementary School
2023	443
2022	447
2021	465
2020	520
2019	520
2018	521
2017	521
2016	544
2015	536
2014	552
2013	579
2012	610
2011	624
2010	610
2009	635
2008	603
2007	595
2006	610
2005	596
2004	625
2003	615
2002	589
2001	583
2000	560
1999	544
1998	571
1997	636
1996	634
1995	602
1994	641
1993	600
1992	592
1991	593
1990	571
1989	586
1988	592
1987	584

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Gender %

Total Classroom Teachers

29 teachers

View Data

Total Classroom Teachers Trends Over Years (1987-2023)
Year	Thunder Mountain Elementary School
2023	28
2022	29
2021	27
2020	28
2019	28
2018	29
2017	29
2016	30
2015	30
2014	29
2013	30
2012	30
2011	30
2010	32
2009	28
2008	31
2007	29
2006	31
2005	33
2004	34
2003	32
2002	33
2001	35
2000	33
1999	33
1998	36
1997	35
1996	34
1995	34
1994	36
1993	34
1992	34
1991	32
1990	32
1989	33
1988	35
1987	32

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School Calendar

School Rankings

Thunder Mountain Elementary School ranks within the bottom 50% of all 1,748 schools in Colorado (based off of combined math and reading proficiency testing data).

The of Thunder Mountain Elementary School is 0.50, 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)

#1290 out of 1748 schools
(Bottom 50%)

View Data

Overall School Rank Trends Over Years (2012-2023)
Year	Thunder Mountain Elementary School
2023	#1290
2022	#1173
2021	#1454
2019	#1132
2018	#1225
2017	#1207
2016	#1172
2015	#1107
2014	#817
2013	#830
2012	#891

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19%

33%

View Data

Math Proficiency Comparison Over Years (2012-2023)
Year	Thunder Mountain Elementary School	Colorado	Mesa County Valley School District No. 51
2023	19%	33%	29%
2022	22%	32%	28%
2021	13%	33%	26%
2019	24%	35%	25%
2018	21%	35%	24%
2017	18%	33%	24%
2016	18%	33%	25%
2015	21%	31%	23%
2014	64%	57%	54%
2013	64%	57%	53%
2012	64%	56%	51%

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29%

45%

View Data

Reading and Language Arts Proficiency Comparison Over Years (2011-2022)
Year	Thunder Mountain Elementary School	Colorado	Mesa County Valley School District No. 51
2022	29%	45%	41%
2021	25%	47%	38%
2019	38%	47%	38%
2018	34%	44%	24%
2017	34%	42%	33%
2016	32%	40%	32%
2015	30%	40%	35%
2014	69%	69%	69%
2013	69%	70%	69%
2012	65%	70%	70%
2011	90%	89%	91%

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Student-Teacher Ratio

15:1

View Data

Student-Teacher Ratio Comparison Over Years (1987-2023)
Year	Thunder Mountain Elementary School	Colorado	Mesa County Valley School District No. 51
2023	16:1	16:1	17:1
2022	15:1	15:1	17:1
2021	17:1	15:1	17:1
2020	19:1	16:1	17:1
2019	19:1	16:1	17:1
2018	18:1	17:1	18:1
2017	18:1	17:1	18:1
2016	18:1	17:1	18:1
2015	18:1	17:1	17:1
2014	19:1	17:1	18:1
2013	20:1	17:1	18:1
2012	20:1	17:1	18:1
2011	21:1	17:1	17:1
2010	19:1	16:1	18:1
2009	23:1	16:1	18:1
2008	20:1	16:1	18:1
2007	21:1	17:1	18:1
2006	20:1	16:1	18:1
2005	18:1	17:1	18:1
2004	18:1	16:1	18:1
2003	19:1	16:1	18:1
2002	18:1	17:1	18:1
2001	17:1	17:1	18:1
2000	17:1	17:1	18:1
1999	16:1	17:1	19:1
1998	16:1	18:1	18:1
1997	18:1	18:1	18:1
1996	19:1	18:1	18:1
1995	18:1	18:1	18:1
1994	18:1	18:1	18:1
1993	18:1	18:1	18:1
1992	18:1	18:1	19:1
1991	19:1	18:1	19:1
1990	18:1	18:1	19:1
1989	18:1	18:1	19:1
1988	17:1	18:1	19:1
1987	18:1	19:1	19:1

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American Indian

n/a

View Data

American Indian Student Percentage Comparison Over Years (1993-2022)
Year	Thunder Mountain Elementary School	Colorado	Mesa County Valley School District No. 51
2022	1%	1%	1%
2021	1%	1%	1%
2020	1%	1%	1%
2019	1%	1%	1%
2013	1%	1%	1%
2011	1%	1%	2%
2010	1%	1%	1%
2009	1%	1%	2%
2008	1%	2%	2%
2007	1%	1%	1%
2006	1%	1%	1%
2005	1%	1%	1%
2004	2%	1%	1%
2003	3%	1%	1%
2002	1%	1%	1%
2001	1%	1%	1%
1993	1%	1%

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Asian

View Data

Asian Student Percentage Comparison Over Years (1988-2023)
Year	Thunder Mountain Elementary School	Colorado	Mesa County Valley School District No. 51
2023	1%	3%	1%
2022	1%	3%	1%
2021	2%	3%	1%
2020	1%	3%	1%
2019	1%	3%	1%
2014	1%	3%	1%
2013	1%	3%	1%
2012	1%	3%	1%
2010	2%	4%	1%
2009	1%	4%	1%
2008	1%	3%	1%
2007	1%	3%	1%
2006	1%	3%	1%
2005	1%	3%	1%
2004	1%	3%	1%
1993	1%	2%	1%
1992	1%	2%	1%
1991	1%	2%	1%
1990	1%	2%	1%
1989	1%	2%	1%
1988	1%	2%	2%

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Hispanic

28%

36%

View Data

Hispanic Student Percentage Comparison Over Years (1991-2023)
Year	Thunder Mountain Elementary School	Colorado	Mesa County Valley School District No. 51
2023	28%	35%	24%
2022	27%	35%	24%
2021	25%	34%	25%
2020	24%	34%	24%
2019	24%	34%	24%
2018	22%	34%	25%
2017	22%	34%	25%
2016	21%	33%	25%
2015	22%	33%	24%
2014	19%	33%	23%
2013	20%	32%	22%
2012	21%	32%	22%
2011	20%	32%	21%
2010	16%	29%	20%
2009	14%	28%	19%
2008	13%	28%	19%
2007	13%	28%	18%
2006	12%	27%	17%
2005	14%	26%	17%
2004	13%	25%	16%
2003	11%	24%	15%
2002	11%	23%	15%
2001	10%	22%	14%
2000	9%	21%	13%
1999	6%	20%	12%
1998	5%	19%	12%
1997	5%	19%	12%
1996	4%	18%	11%
1995	2%	18%	11%
1994	2%	17%	11%
1993	3%	17%	10%
1992	3%	17%	10%
1991	4%	16%	10%

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Black

View Data

Black Student Percentage Comparison Over Years (1992-2023)
Year	Thunder Mountain Elementary School	Colorado	Mesa County Valley School District No. 51
2023	1%	5%
2022	1%	4%
2021	1%	5%	1%
2020	1%	5%	1%
2019	1%	5%	1%
2014	1%	5%	1%
2013	1%	5%	1%
2012	1%	5%	1%
2011	2%	5%	1%
2010	2%	6%	2%
2009	1%	6%	2%
2008	1%	6%	1%
2007	1%	6%	2%
2006	1%	6%	1%
2005	1%	6%	1%
2004	1%	6%	1%
2003	1%	6%	1%
2002	1%	6%	1%
2001	1%	6%	1%
1993	1%	5%
1992	1%	5%

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White

65%

50%

View Data

White Student Percentage Comparison Over Years (1991-2023)
Year	Thunder Mountain Elementary School	Colorado	Mesa County Valley School District No. 51
2023	67%	51%	70%
2022	67%	52%	70%
2021	68%	52%	69%
2020	68%	53%	70%
2019	68%	53%	70%
2018	74%	53%	71%
2017	74%	53%	71%
2016	74%	54%	71%
2015	74%	54%	71%
2014	76%	55%	71%
2013	76%	56%	72%
2012	74%	56%	73%
2011	75%	57%	73%
2010	79%	60%	76%
2009	82%	61%	76%
2008	83%	61%	77%
2007	84%	62%	78%
2006	85%	63%	80%
2005	82%	64%	80%
2004	83%	65%	81%
2003	85%	66%	82%
2002	87%	67%	82%
2001	88%	68%	83%
2000	91%	70%	85%
1999	94%	71%	85%
1998	95%	72%	85%
1997	95%	72%	86%
1996	96%	73%	87%
1995	98%	74%	87%
1994	98%	75%	87%
1993	94%	75%	89%
1992	95%	75%	89%
1991	94%	76%	89%

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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	Thunder Mountain Elementary School	Colorado	Mesa County Valley School District No. 51
2023	3%	5%	4%
2022	3%	5%	4%
2021	3%	5%	3%
2020	5%	4%	3%
2019	5%	4%	3%
2018	4%	4%	4%
2017	4%	4%	4%
2016	5%	4%	4%
2015	4%	4%	5%
2014	3%	3%	3%
2013	1%	3%	3%

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All Ethnic Groups

0.50

0.62

View Data

Diversity Score Comparison Over Years (1991-2023)
Year	Thunder Mountain Elementary School	Colorado	Mesa County Valley School District No. 51
2023	0.48	0.62	0.45
2022	0.48	0.61	0.46
2021	0.48	0.61	0.46
2020	0.48	0.60	0.46
2019	0.48	0.60	0.46
2018	0.41	0.60	0.44
2017	0.41	0.60	0.44
2016	0.41	0.60	0.44
2015	0.41	0.60	0.44
2014	0.40	0.59	0.44
2013	0.40	0.59	0.44
2012	0.41	0.59	0.43
2011	0.40	0.58	0.42
2010	0.35	0.55	0.39
2009	0.31	0.55	0.38
2008	0.30	0.55	0.37
2007	0.28	0.54	0.36
2006	0.27	0.53	0.34
2005	0.31	0.52	0.34
2004	0.29	0.52	0.33
2003	0.27	0.51	0.32
2002	0.23	0.50	0.31
2001	0.21	0.49	0.29
2000	0.17	0.47	0.26
1999	0.12	0.46	0.25
1998	0.11	0.46	0.26
1997	0.12	0.45	0.24
1996	0.10	0.45	0.24
1995	0.05	0.43	0.23
1994	0.07	0.41	0.22
1993	0.12	0.41	0.21
1992	0.10	0.40	0.21
1991	0.12	0.40	0.21

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Eligible for

52%

39%

View Data

Free Lunch Eligibility Comparison Over Years (1993-2023)
Year	Thunder Mountain Elementary School	Colorado	Mesa County Valley School District No. 51
2023	43%	33%	33%
2022	43%	30%	37%
2021	50%	33%	43%
2020	41%	33%	40%
2019	41%	33%	40%
2018	43%	35%	42%
2017	43%	35%	42%
2016	44%	34%	40%
2015	34%	34%	36%
2014	31%	35%	35%
2013	33%	34%	37%
2012	29%	34%	35%
2011	28%	33%	36%
2010	28%	31%	36%
2009	19%	28%	30%
2008	18%	28%	31%
2007	17%	27%	24%
2006	24%	27%	33%
2005	20%	25%	32%
2004	11%	24%	31%
2003	21%	22%	29%
2002	20%	21%	28%
2001	20%	20%	27%
2000	17%	21%	26%
1999	17%	21%	26%
1998	20%	22%	29%
1997	32%	22%	36%
1996	27%	22%	35%
1995	20%	22%	27%
1994	17%	21%	21%
1993	15%	20%	21%

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Eligible for

View Data

Reduced-Price Lunch Eligibility Comparison Over Years (2003-2023)
Year	Thunder Mountain Elementary School	Colorado	Mesa County Valley School District No. 51
2023	8%	7%	9%
2022	11%	6%	8%
2021	11%	7%	9%
2020	10%	8%	9%
2019	10%	8%	9%
2018	9%	8%	8%
2017	9%	8%	8%
2016	6%	7%	6%
2015	8%	7%	7%
2014	6%	7%	7%
2013	6%	7%	8%
2012	11%	7%	9%
2011	8%	7%	9%
2010	5%	7%	8%
2009	6%	7%	7%
2008	8%	7%	7%
2007	6%	7%	6%
2006	8%	6%	8%
2005	10%	6%	9%
2004	5%	6%	9%
2003	10%	7%	10%

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School Statewide Testing

School District Name

Mesa County Valley School District No. 51

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

Profile last updated: 02/09/2025

Frequently Asked Questions

What is Thunder Mountain Elementary School's ranking?

Thunder Mountain Elementary School is ranked #1290 out of 1,748 schools, which ranks it among the bottom 50% of public schools in Colorado.

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

19% of students have achieved math proficiency (compared to the 33% CO state average), while 29% of students have achieved reading proficiency (compared to the 45% CO state average).

How many students attend Thunder Mountain Elementary School?

441 students attend Thunder Mountain Elementary School.

What is the racial composition of the student body?

65% of Thunder Mountain Elementary School students are White, 28% of students are Hispanic, 3% of students are Two or more races, 2% of students are Asian, 1% of students are Black, and 1% of students are Hawaiian.

What is the student-teacher ratio of Thunder Mountain Elementary School?

Thunder Mountain Elementary School has a student ration of 15:1, which is equal to the Colorado state average of 15:1.

What grades does Thunder Mountain Elementary School offer ?

Thunder Mountain Elementary School offers enrollment in grades Prekindergarten-5 (No virtual instruction).

What school district is Thunder Mountain Elementary School part of?

Thunder Mountain Elementary School is part of Mesa County Valley School District No. 51.

School Reviews

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Quick Facts (2025-26)

Grades: Prekindergarten-5
Enrollment: 441 students
Student-Teacher Ratio: 15:1
Minority Enrollment: 35%
: Bottom 50%
: 19% (Btm 50%)
: 29% (Btm 50%)
Source: National Center for Education Statistics (NCES), CO Dept. of Education