Beta You're viewing our redesigned school page. Prefer the classic layout?

New rankings! Colorado test scores for the 2025-26 school year were just released — SchoolDigger posted updated rankings this week.

Be the first to know when we post new rankings!

Flagstone Elementary School

Q: Is Flagstone Elementary School a good school?

Flagstone Elementary School ranks 117 th of 943 Colorado elementary schools. SchoolDigger rates this school 4 stars out of 5.

Public Grades PK, KG-6

117^th

SchoolDigger Rank ?

of 943 Colorado Elementary Schools

Better than 88% of Colorado elementary schools

Summary

Flagstone Elementary School is a PK-6 elementary school in Castle Rock, CO, serving 496 students as part of the highly rated Douglas County School District No. Re 1 (ranked 6th out of 115 Colorado districts). For the 2025-26 school year, Flagstone is ranked 117th out of 943 Colorado elementary schools — an 88th-percentile performance that earns a 4-star rating. Among 10 nearby comparison schools in the same district, Flagstone is the highest-ranked, including ahead of charter and magnet-program schools. The school has shown a clear upward trajectory over the past decade, moving from a 3-star school in the 51st–66th percentile range (2015–2020) to a consistent 4-star school in the 80th+ percentile since 2021-22.

Flagstone's academic profile is characterized by strong English language arts and math proficiency, well above state averages and mostly above district averages. In 2025-26, 66% of students are proficient in ELA and 64.9% are proficient in math — the latter 27.6 points above the state. Among nearby schools, only Academy Charter School posts higher math proficiency (69.2%). Flagstone's math performance has climbed 15.1 percentage points in two years, from 49.8% in 2023-24 to 64.9% in 2025-26, reflecting a deliberate and successful focus on mathematics instruction. The school is especially effective in upper elementary grades, with 5th graders reaching 78.6% ELA proficiency — 12 points above the district. The clearest area for improvement is 5th-grade science, where Flagstone's 50.9% proficiency trails the district average of 55.0% and peers like Aspen View Academy (60.0%) and Franktown Elementary School (56.9%).

Flagstone also stands out for its strong attendance and resilience. Chronic absenteeism fell from 19.0% to 13.6% in the most recent year, well below the district (16.6%) and state (28.4%) averages. The school serves a more economically diverse population than many high-performing neighbors — with a free/reduced lunch rate of 21.2% compared to Sage Canyon Elementary's 9.8% or Academy Charter School's 10.5% — yet still posts top-tier results. Flagstone's student-teacher ratio of 17.1 is higher than most peers, but the school outperforms nearly all of them academically. Subgroup performance is strong as well, with female students ranking in the 87th percentile statewide and broad-based gains across different groups in the most recent year.

496

Students ?

17.1

Student/teacher ratio ?

$16,403

Per pupil spending ?

21.2%

Free/discounted lunch ?

104 Lovington Street
Castle Rock, CO 80104-8707

(303) 387-5225

District: Douglas County School District No. Re 1

Students who attend Flagstone Elementary School usually attend:

Middle:	Mesa Middle School
High:	Douglas County High School

Racial breakdown:

White:

72.4%

Hispanic:

18.1%

Two or more races:

7.5%

See top rated Colorado elementary schools

Compare Flagstone Elementary School to nearby elementary schools!

At a glance

▲ Ranking trend: Improving — 58th percentile in 2016 → 88th in 2026

Strengths

✓Test scores above the Colorado average (64% vs 41% meeting standards)

✓Ranks in the top 12% of Colorado elementary schools

✓Ranking is trending up — up 30 percentile points since 2016

Worth a look

!Some student groups rank well below the school's overall statewide standing

Students meeting standards (2025-2026) ?

This school64%

District avg60%

Colorado avg41%

117^th of 943

Colorado public elementary schools ?

Top 12%▲ up 29 pts since 2016

From top 42% (2016) to top 12% (2026)

See the entire ranking list of Colorado Elementary Schools →

★★★★★

SchoolDigger rating ?

21^st of 58Elementary Schools in the Douglas County School District No. Re 1

6^th of 115Douglas County School District No. Re 1 among Colorado districts

Statewide rank percentile over time (100 = the top-ranked school in the state; click a legend item to add a student group)

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	Colorado percentile	Rating
2026	86.0	117 of 943	87.6%	★★★★☆
2025	81.5	157 of 950	83.5%	★★★★☆
2024	78.1	186 of 943	80.3%	★★★★☆
2023	83.8	131 of 933	86.0%	★★★★☆
2022	83.7	122 of 921	86.8%	★★★★☆
2021	64.3	270 of 710	62.0%	★★★☆☆
2019	60.3	363 of 965	62.4%	★★★☆☆
2018	62.4	308 of 917	66.4%	★★★☆☆
2017	45.3	453 of 929	51.2%	★★★☆☆
2016	53.9	380 of 914	58.4%	★★★☆☆
2015	61.4	316 of 938	66.3%	★★★☆☆
2014	67.6	298 of 962	69.0%	★★★☆☆
2013	73.2	244 of 954	74.4%	★★★★☆
2012	75.3	218 of 935	76.7%	★★★★☆
2011	76.5	205 of 935	78.1%	★★★★☆
2010	74.3	220 of 925	76.2%	★★★★☆
2009	78.2	174 of 872	80.0%	★★★★☆
2008	71.2	242 of 849	71.5%	★★★★☆
2007	63.1	339 of 852	60.2%	★★★☆☆
2006	78.7	145 of 829	82.5%	★★★★☆
2005	84.0	90 of 823	89.1%	★★★★☆
2004	77.3	175 of 808	78.3%	★★★★☆

Female

Year	Avg score	Statewide rank	Colorado percentile	Rating
2026	82.7	87 of 692	87.4%	★★★★☆
2025	68.6	185 of 694	73.3%	★★★★☆
2024	70.6	186 of 684	72.8%	★★★★☆
2023	81.4	93 of 642	85.5%	★★★★☆
2022	86.2	58 of 595	90.3%	★★★★★
2021	55.8	189 of 351	46.2%	★★☆☆☆
2019	52.7	325 of 758	57.1%	★★★☆☆
2018	57.8	257 of 690	62.8%	★★★☆☆

Male

Year	Avg score	Statewide rank	Colorado percentile	Rating
2026	73.7	167 of 694	75.9%	★★★★☆
2025	79.5	124 of 700	82.3%	★★★★☆
2024	70.1	183 of 683	73.2%	★★★★☆
2023	72.9	158 of 649	75.7%	★★★★☆
2022	66.4	186 of 594	68.7%	★★★☆☆
2021	54.4	190 of 352	46.0%	★★☆☆☆
2019	55.5	304 of 764	60.2%	★★★☆☆
2018	52.0	289 of 693	58.3%	★★★☆☆

White

Year	Avg score	Statewide rank	Colorado percentile	Rating
2026	69.2	151 of 546	72.3%	★★★★☆
2025	60.0	209 of 551	62.1%	★★★☆☆
2024	59.5	219 of 539	59.4%	★★★☆☆
2023	64.6	177 of 525	66.3%	★★★☆☆
2022	58.2	192 of 454	57.7%	★★★☆☆
2019	38.1	372 of 596	37.6%	★★☆☆☆
2018	48.9	166 of 337	50.7%	★★★☆☆

How student groups rank statewide ? (each group's percentile vs the same group at other schools — higher is better; the +/- beside each compares the group with this school's overall percentile)

Female (2026)87th percentile~ school

Male (2026)76th percentile-12 vs school

White (2026)72nd percentile-15 vs school

By subject vs Colorado (2025-2026) ?

English Language Arts66%+21 vs state

Math65%+28 vs state

Science51%+15 vs state

2.3

3 ratings · 2 written reviews

5★1

4★0

3★0

2★0

1★2

Rate Flagstone Elementary School

Have first-hand experience? A quick rating - and a sentence or two about what stands out (teachers, academics, safety, communication) - helps other families know what to expect.

Takes about a minute. We email you a link to verify your review - your address is never shown publicly.

Tap a star to rate

What people are saying

by a parent
Friday, April 12, 2013

Unlike the earlier comments I found the interim principle Nancy Wortmann to be competent, professional and well liked by the students and faculty. The one year wonder prior did a lot of harm and Nancy brought stability.

The current VP Kelli Smith was just named to the post and I hope she continues to make the practical decisions and provide the same leadership.

Yes there are occasions where small children "collect" things like items they find in lost and found and we diligently ensured our daughter learned the difference and alerted her 1st grade teacher, no more issues and those few in the class that seemed prone to collect things have been counseled and it stopped.

My daughter is the youngest in her class and that has a major impact on performance. The school assembed a team that has planned, invested and executed in an individualized program that has paid off big time. She loves school now, especially reading and her grades and performance is now on par with the best older students in the class.

Yes I wish the teacher to student ratio was better, but this school delivers and has a lot of reason for parents and studnts to show their Mustang pride. Close Quote

by a parent
Thursday, January 17, 2013

Too many kids in classrooms, no teacher aids or assistants, theft a big problem, terrible principle. Close Quote

Schools Near Flagstone Elementary School

Load more schools when map is moved

Ranking:

E Elementary M Middle H High A Alternative P Private

Choose columns to see: Summary School Students/Teachers Ranking Test Scores Finance All

School													Students/Teachers											Ranking (2026)				Ranking (2025)				CMAS English Language Arts (2026)							CMAS Math (2026)							CMAS Science (2026)		Per Pupil Expenditures (2025)
Name	Type	Grades	Address	City	Zip	County	District	Is Charter	Is Magnet	Is Virtual	Is Title I	Phone	Enrollment	Full-time Teachers	Student/ Teacher Ratio	Free/Discounted Lunch Recipients	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2026)	Statewide Rank (2026)	State Percentile (2026)	SchoolDigger Rating (2026)	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	Rank Change from Previous Year	CMAS English Language Arts 3rd Grade	CMAS English Language Arts 4th Grade	CMAS English Language Arts 5th Grade	CMAS English Language Arts 6th Grade	CMAS English Language Arts 7th Grade	CMAS English Language Arts 8th Grade	CMAS English Language Arts All Grades	CMAS Math 3rd Grade	CMAS Math 4th Grade	CMAS Math 5th Grade	CMAS Math 6th Grade	CMAS Math 7th Grade	CMAS Math 8th Grade	CMAS Math All Grades	CMAS Science 5th Grade	CMAS Science 8th Grade	Total
Flagstone Elementary School	Public	PK, KG-6	104 Lovington Street	Castle Rock	80104	Douglas County	Douglas County School District No. Re 1	No	No	No	No	(303) 387-5225	496	29	17.1	21.2%	359 (72.4%)	3 (0.6%)	90 (18.1%)	5 (1.0%)	1 (0.2%)	1 (0.2%)	37 (7.5%)	86	117^th of 943 public elementary schools	87.6%		81.5	157^th of 950 public elementary schools	83.5%	40	54.7	61.5	78.6	71.7			66.0	65.6	66.2	70.2	56.6			64.9	50.9		$16,403
Rock Ridge Elementary School	Public	PK, KG-6	400 North Heritage Road	Castle Rock	80104	Douglas County	Douglas County School District No. Re 1	No	No	No	No	(303) 387-5150	449	30	15.2	22.7%	329 (73.3%)	7 (1.6%)	83 (18.5%)	1 (0.2%)	2 (0.4%)	1 (0.2%)	26 (5.8%)	61.1	346^th of 943 public elementary schools	63.3%		44.2	499^th of 950 public elementary schools	47.5%	153	46.3	47.4	57.4	52.2			50.7	43.6	38.6	59.3	46.7			46.9	35.2		$19,276
Sage Canyon Elementary	Public	PK, KG-6	2420 Autumn Sage Street	Castle Rock	80108	Douglas County	Douglas County School District No. Re 1	No	No	No	No	(720) 433-0110	552	33	16.5	9.8%	411 (74.5%)	9 (1.6%)	65 (11.8%)	13 (2.4%)	2 (0.4%)	2 (0.4%)	50 (9.1%)	80.1	173^rd of 943 public elementary schools	81.7%		72.6	250^th of 950 public elementary schools	73.7%	77	48.0	73.9	63.2				62.3	65.8	75.3	49.4				64.0	47.4		$17,887
Franktown Elementary School	Public	PK, KG-5	1384 North State Highway 83	Franktown	80116	Douglas County	Douglas County School District No. Re 1	No	No	No	No	(303) 387-5300	354	22	16.2	11.3%	296 (83.6%)	4 (1.1%)	36 (10.2%)	4 (1.1%)	3 (0.8%)	0 (0.0%)	11 (3.1%)	76.6	205^th of 943 public elementary schools	78.3%		87.6	105^th of 950 public elementary schools	88.9%	100	45.5	67.4	70.7				59.9	60.0	37.2	65.5				56.0	56.9		$17,741
South Ridge Elementary An IB World School	Public	K-5	1100 South Street	Castle Rock	80104	Douglas County	Douglas County School District No. Re 1	No	No	No	Yes	(303) 387-5075	371	28	13.1	53.1%	210 (56.6%)	10 (2.7%)	134 (36.1%)	5 (1.3%)	1 (0.3%)	1 (0.3%)	10 (2.7%)	41	506^th of 943 public elementary schools	46.3%		32.5	593^rd of 950 public elementary schools	37.6%	87	41.3	33.3	50.0				40.8	46.0	31.8	28.0				35.8	30.0		$21,450
Castle Rock Elementary School	Public	PK, KG-6	1103 Canyon Drive	Castle Rock	80104	Douglas County	Douglas County School District No. Re 1	No	No	No	No	(303) 387-5000	440	31	14.1	32.0%	268 (60.9%)	10 (2.3%)	114 (25.9%)	16 (3.6%)	1 (0.2%)	1 (0.2%)	30 (6.8%)	61.3	342^nd of 943 public elementary schools	63.7%		47.7	464^th of 950 public elementary schools	51.2%	122	54.7	50.0	56.0	41.3			50.7	52.8	37.0	56.0	28.3			43.8	46.9		$19,941
Renaissance Expedition Learn Outward Bound School	Public, Magnet	K-6	3960 Trailboss Lane	Castle Rock	80104	Douglas County	Douglas County School District No. Re 1	No	Yes	No	No	(303) 387-8000	361	22	16.6	6.1%	297 (82.3%)	5 (1.4%)	29 (8.0%)	4 (1.1%)	0 (0.0%)	0 (0.0%)	26 (7.2%)	62.6	329^th of 943 public elementary schools	65.1%		68.4	284^th of 950 public elementary schools	70.1%	45	55.8	43.8	60.8	83.3			57.7	51.9	29.2	37.3	66.7			43.4	43.1		$17,982
World Compass Academy	Public, Charter	PK, KG-8	2490 South Perry Street	Castle Rock	80104	Douglas County	Douglas County School District No. Re 1	Yes	No	No	No	(303) 814-5200	791	48	16.4	15.5%	503 (63.6%)	10 (1.3%)	182 (23.0%)	24 (3.0%)	0 (0.0%)	0 (0.0%)	72 (9.1%)	71.2	254^th of 943 public elementary schools	73.1%		71	264^th of 950 public elementary schools	72.2%	10	61.5	60.6	53.9	58.6	72.0	62.2	60.8	71.0	43.7	43.4	37.0	71.7	64.3	55.0	44.0	65.0	$13,663
Academy Charter School	Public, Charter	PK, KG-8	1551 Prairie Hawk Drive	Castle Rock	80109	Douglas County	Douglas County School District No. Re 1	Yes	No	No	No	(303) 660-4881	581	36	16.1	10.5%	440 (75.7%)	5 (0.9%)	71 (12.2%)	24 (4.1%)	3 (0.5%)	0 (0.0%)	38 (6.5%)	85.5	126^th of 943 public elementary schools	86.6%		81.6	155^th of 950 public elementary schools	83.7%	29	72.9	82.0	54.1	66.0	87.5	88.6	74.6	76.3	79.7	55.0	62.3	66.1	77.3	69.2	46.0	84.1	$11,059
Aspen View Academy	Public, Charter	PK, KG-8	2131 Low Meadow Blvd	Castle Rock	80109	Douglas County	Douglas County School District No. Re 1	Yes	No	No	No	(720) 733-3436	1,018	56	18.0	10.2%	830 (81.5%)	11 (1.1%)	114 (11.2%)	10 (1.0%)	4 (0.4%)	1 (0.1%)	48 (4.7%)	59.4	361^st of 943 public elementary schools	61.7%		61.2	348^th of 950 public elementary schools	63.4%	13	37.9	43.1	46.0	49.0	76.8	62.1	51.6	51.5	54.9	45.0	31.3	57.9	66.2	50.4	60.0	58.7	$12,384

Frequently Asked Questions about Flagstone Elementary School

Is Flagstone Elementary School a good school?

Flagstone Elementary School ranks 117^th of 943 Colorado elementary schools. SchoolDigger rates this school 4 stars out of 5.

How many students attend Flagstone Elementary School?

In the 2024-25 school year, 496 students attended Flagstone Elementary School.

What district is Flagstone Elementary School in?

Douglas County School District No. Re 1

What schools do graduates of Flagstone Elementary School attend?

Students who attend Flagstone Elementary School usually go on to attend:

Middle : Mesa Middle School
High : Douglas County High School

What is the racial makeup of Flagstone Elementary School?

Students at Flagstone Elementary School are 72% White, 18% Hispanic, 7% Two or more races, 1% Asian.

Rate Flagstone Elementary School!

Other helpful SchoolDigger resources...

Compare to nearby schools

COColorado Elementary School Rankings

COColorado District Rankings

Schools in Castle Rock, CO

Sign up for updates!

Be the first to know when there is an update for Flagstone Elementary School!

Latest Colorado data All new data »

2025–26 CMAS, PSAT10, PSAT9 & SAT test scoresNewAug 19, 2026

2024–25 school spending dataJun 13, 2026

2024–25 dropout rates & graduation ratesJan 13, 2026

2024–25 attendance dataAug 27, 2025

SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the Colorado Department of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.