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Addenbrooke Classical Grammar School

Q: Is Addenbrooke Classical Grammar School a good school?

Addenbrooke Classical Grammar School ranks 425 th of 946 Colorado elementary schools. SchoolDigger rates this school 3 stars out of 5.

Public, Charter Grades PK, KG-8

425^th

SchoolDigger Rank ?

of 946 Colorado Elementary Schools

Better than 55% of Colorado elementary schools

Summary

Addenbrooke Classical Grammar School is a PK–8 school in Lakewood, Colorado, serving 774 students as part of the Jefferson County School District R-1, a district ranked in the top quarter of Colorado school districts.

Addenbrooke sits right around the state average in English Language Arts and math, but it lags behind its own district's averages. In 2025–2026, the school posted 42.7% ELA proficiency and 37.2% math proficiency, compared to district averages of 53.7% and 44.6%. That said, it outperforms the average of nearby schools—neighboring schools average about 39.2% in ELA and 29.2% in math. Governor's Ranch Elementary School is clearly stronger in both subjects, while Westgate Elementary School trails significantly. The school's most distinctive pattern is a sharp divide between elementary and middle school performance. Elementary grades generally meet or beat state averages in math and ELA, and 5th grade science has improved dramatically from 13% to 40% proficiency over four years. But 7th grade math (19.4% proficiency) and 8th grade science (12.5%) are significant weak points, with 8th grade science sitting roughly 23 points below the state average.

On the positive side, Addenbrooke has strong attendance, with a 16.5% chronic absenteeism rate well below the district rate of 26.6% and far better than several nearby schools where more than half of students are chronically absent. The school's student-teacher ratio of 17.1 is on the higher end compared to surrounding schools like Governor's Ranch (16.2) and Green Gables Elementary School (15.8). The school's recent state ranking dipped to the 55th percentile (3 stars) in 2025–2026, down from the 66th percentile the previous year, though it remains in a stable mid-tier range. For parents, the key takeaway is that Addenbrooke offers a solid elementary experience, good attendance, and steady science improvement, but the middle grades—particularly math and science—are worth investigating closely.

774

Students ?

17.1

Student/teacher ratio ?

$9,284

Per pupil spending ?

9.8%

Free/discounted lunch ?

7114 West Jefferson Avenue
Lakewood, CO 80235-2354

(303) 986-5791

District: Jefferson County School District No. R-1

Racial breakdown:

White:

61.6%

Hispanic:

30.4%

Asian:

3.5%

See top rated Colorado elementary schools

Compare Addenbrooke Classical Grammar School to nearby elementary schools!

At a glance

▼ Ranking trend: Recently slipping — 71st percentile in 2021 → 55th in 2026

Strengths

✓Above the Colorado median (55th percentile)

Worth a look

!Ranking has slipped from its 71st-percentile peak (2021) to 55th (2026)

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

Students meeting standards (2025-2026) ?

This school38%

District avg49%

Colorado avg40%

Elementary school

425^th of 946

Colorado public elementary schools ?

Top 45%▲ up 14 pts since 2018

From bottom 41% (2018) to top 45% (2026)

See the entire ranking list of Colorado Elementary Schools →

★★★★★

SchoolDigger rating ?

Middle school

228^th of 476

Colorado public middle schools ?

Top 48%▼ down 3 pts since 2023

From top 45% (2023) to top 48% (2026)

See the entire ranking list of Colorado Middle Schools →

★★★★★

SchoolDigger rating ?

54^th of 84Elementary Schools in the Jefferson County School District No. R-1

24^th of 114Jefferson County School District No. R-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)

Elementary school ranking

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	Colorado percentile	Rating
2026	51.4	425 of 946	55.1%	★★★☆☆
2025	64.4	321 of 950	66.2%	★★★☆☆
2024	55.7	399 of 943	57.7%	★★★☆☆
2023	58.8	355 of 933	62.0%	★★★☆☆
2022	56.6	375 of 921	59.3%	★★★☆☆
2021	74.4	203 of 710	71.4%	★★★★☆
2019	54.4	409 of 965	57.6%	★★★☆☆
2018	37.5	543 of 917	40.8%	★★☆☆☆

Female

Year	Avg score	Statewide rank	Colorado percentile	Rating
2026	39.6	400 of 695	42.4%	★★☆☆☆
2025	63.5	227 of 694	67.3%	★★★☆☆
2024	45.8	353 of 684	48.4%	★★☆☆☆
2023	46.8	322 of 642	49.8%	★★★☆☆
2022	38.6	356 of 595	40.2%	★★☆☆☆
2021	62.5	157 of 351	55.3%	★★★☆☆
2019	49.0	361 of 758	52.4%	★★★☆☆
2018	42.0	373 of 690	45.9%	★★☆☆☆

Hispanic

Year	Avg score	Statewide rank	Colorado percentile	Rating
2026	43.9	121 of 251	51.8%	★★★☆☆
2025	50.1	111 of 247	55.1%	★★★☆☆
2024	56.5	90 of 242	62.8%	★★★☆☆
2023	85.4	16 of 197	91.9%	★★★★★

Low Socio Economic Status

Year	Avg score	Statewide rank	Colorado percentile	Rating
2019	48.4	163 of 332	50.9%	★★★☆☆

Male

Year	Avg score	Statewide rank	Colorado percentile	Rating
2026	46.8	349 of 697	49.9%	★★★☆☆
2025	49.8	330 of 700	52.9%	★★★☆☆
2024	49.1	329 of 683	51.8%	★★★☆☆
2023	56.5	266 of 649	59.0%	★★★☆☆
2022	58.5	229 of 594	61.4%	★★★☆☆
2021	63.3	155 of 352	56.0%	★★★☆☆
2019	45.9	379 of 764	50.4%	★★★☆☆
2018	33.1	452 of 693	34.8%	★★☆☆☆

White

Year	Avg score	Statewide rank	Colorado percentile	Rating
2026	35.6	371 of 547	32.2%	★★☆☆☆
2025	52.4	270 of 551	51.0%	★★★☆☆
2024	44.5	308 of 539	42.9%	★★☆☆☆
2023	43.7	302 of 525	42.5%	★★☆☆☆
2022	40.0	300 of 454	33.9%	★★☆☆☆
2021	60.9	124 of 288	56.9%	★★★☆☆
2019	39.6	366 of 596	38.6%	★★☆☆☆

Middle school ranking

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	Colorado percentile	Rating
2026	42.8	228 of 476	52.1%	★★★☆☆
2025	61.8	150 of 469	68.0%	★★★☆☆
2024	57.0	178 of 485	63.3%	★★★☆☆
2023	50.6	214 of 480	55.4%	★★★☆☆

Female

Year	Avg score	Statewide rank	Colorado percentile	Rating
2026	38.0	205 of 368	44.3%	★★☆☆☆
2025	52.2	145 of 347	58.2%	★★★☆☆
2024	37.4	195 of 350	44.3%	★★☆☆☆
2023	39.7	196 of 363	46.0%	★★☆☆☆
2022	25.8	231 of 326	29.1%	★☆☆☆☆

Hispanic

Year	Avg score	Statewide rank	Colorado percentile	Rating
2023	66.0	46 of 198	76.8%	★★★★☆

Male

Year	Avg score	Statewide rank	Colorado percentile	Rating
2026	37.1	202 of 372	45.7%	★★☆☆☆
2025	60.0	121 of 352	65.6%	★★★☆☆
2024	68.5	91 of 357	74.5%	★★★★☆
2023	51.6	141 of 356	60.4%	★★★☆☆
2022	47.1	153 of 328	53.4%	★★★☆☆

White

Year	Avg score	Statewide rank	Colorado percentile	Rating
2026	46.5	145 of 278	47.8%	★★☆☆☆
2025	52.6	122 of 275	55.6%	★★★☆☆
2024	43.7	143 of 273	47.6%	★★☆☆☆
2023	37.7	177 of 286	38.1%	★★☆☆☆
2022	29.4	191 of 265	27.9%	★☆☆☆☆

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)

Elementary school

Hispanic (2026)52nd percentile-3 vs school

Low Socio Economic Status (2019)51st percentile-7 vs school

Male (2026)50th percentile-5 vs school

Female (2026)42nd percentile-13 vs school

White (2026)32nd percentile-23 vs school

Middle school

Hispanic (2023)77th percentile+21 vs school

White (2026)48th percentile-4 vs school

Male (2026)46th percentile-6 vs school

Female (2026)44th percentile-8 vs school

By subject vs Colorado (2025-2026) ?

English Language Arts43%~ state avg

Math37%~ state avg

Science27%-8 vs state

★

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Schools Near Addenbrooke Classical Grammar School

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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 (2025)	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
Addenbrooke Classical Grammar School	Public, Charter	PK, KG-8	7114 West Jefferson Avenue	Lakewood	80235	Jefferson County	Jefferson County School District No. R-1	Yes	No	No	No	(303) 986-5791	774	45	17.1		477 (61.6%)	10 (1.3%)	235 (30.4%)	27 (3.5%)	1 (0.1%)	1 (0.1%)	23 (3.0%)	51.4	425^th of 946 public elementary schools	55.1%		64.4	321^st of 950 public elementary schools	66.2%	104	36.5	39.4	53.2	41.5	50.7	37.9	42.7	44.8	42.6	39.5	38.9	19.4	31.8	37.2	40.0	12.5	$9,284
Traylor Academy	Public	PK, KG-5	2900 South Ivan Way	Denver	80227	Jefferson County	School District No. 1	No	No	No	Yes	(720) 424-3480	300	20	14.9	66.3%	32 (10.7%)	11 (3.7%)	232 (77.3%)	12 (4.0%)	2 (0.7%)	0 (0.0%)	11 (3.7%)	23.1	695^th of 946 public elementary schools	26.5%		10.3	882^nd of 950 public elementary schools	7.2%	187	41.4	30.0	21.9				30.9	30.3	709.0	710.0				15.1	9.4		$19,615
Westgate Elementary School	Public	PK, KG-5	8550 West Vassar Drive	Lakewood	80227	Jefferson County	Jefferson County School District No. R-1	No	No	No	Yes	(303) 982-9130	305	21	14.4	68.9%	107 (35.1%)	12 (3.9%)	145 (47.5%)	13 (4.3%)	1 (0.3%)	1 (0.3%)	26 (8.5%)	9.9	888^th of 946 public elementary schools	6.1%		10.8	872^nd of 950 public elementary schools	8.2%	16	9.5	19.6	19.6				16.7	14.0	10.9	16.1				13.8	18.2		$19,442
Sabin World School	Public	PK, KG-5	3050 South Vrain Street	Denver	80236	Denver County	School District No. 1	No	No	No	Yes	(720) 424-4520	559	35	16.1	65.1%	156 (27.9%)	35 (6.3%)	313 (56.0%)	25 (4.5%)	1 (0.2%)	0 (0.0%)	27 (4.8%)	52.7	412^th of 946 public elementary schools	56.4%		59.6	364^th of 950 public elementary schools	61.7%	48	54.8	50.6	47.5				50.9	36.5	47.6	42.5				42.4	25.0		$18,539
Bear Creek K-8 School	Public	K-8	9601 West Dartmouth Place	Lakewood	80227	Jefferson County	Jefferson County School District No. R-1	No	No	No	No	(303) 982-8714	863	50	17.2	50.5%	342 (39.6%)	12 (1.4%)	400 (46.3%)	63 (7.3%)	8 (0.9%)	0 (0.0%)	38 (4.4%)	26.6	664^th of 946 public elementary schools	29.8%		32.5	592^nd of 950 public elementary schools	37.7%	72	29.3	33.3	29.8	40.4	43.2	45.4	37.7	26.3	21.2	31.0	19.2	26.3	25.9	24.8	22.6	34.6	$16,889
Kaiser Elementary School	Public	PK, KG-5	4500 South Quitman Street	Denver	80236	Denver County	School District No. 1	No	No	No	Yes	(720) 424-6210	243	18	13.5	73.7%	56 (23.0%)	17 (7.0%)	152 (62.6%)	10 (4.1%)	0 (0.0%)	0 (0.0%)	8 (3.3%)	18.2	771^st of 946 public elementary schools	18.5%		18.3	760^th of 950 public elementary schools	20.0%	11	31.0	17.6	30.8				27.8	27.6	22.2	11.5				20.5	15.4		$24,403
Grant Ranch Ece-8 School	Public	PK, KG-8	5400 South Jay Circle	Denver	80123	Jefferson County	School District No. 1	No	No	No	Yes	(720) 424-6880	334	22	14.9	67.4%	104 (31.1%)	20 (6.0%)	176 (52.7%)	14 (4.2%)	0 (0.0%)	1 (0.3%)	18 (5.4%)	18.7	764^th of 946 public elementary schools	19.2%		14.6	815^th of 950 public elementary schools	14.2%	51	17.9	30.8	28.1	22.6	36.1	27.0	27.4	32.1	15.4	31.3	9.7	19.4	8.1	18.9	15.6	18.9	$19,040
Green Gables Elementary School	Public	PK, KG-5	8701 West Woodard Drive	Lakewood	80227	Jefferson County	Jefferson County School District No. R-1	No	No	No	No	(303) 982-8314	315	20	15.8	33.7%	198 (62.9%)	6 (1.9%)	87 (27.6%)	10 (3.2%)	2 (0.6%)	1 (0.3%)	11 (3.5%)	49.8	435^th of 946 public elementary schools	54.0%		37.5	551^st of 950 public elementary schools	42.0%	116	29.5	54.5	60.9				49.0	29.5	43.6	40.4				38.4	32.6		$17,402
Governor's Ranch Elementary School	Public	PK, KG-5	5354 South Field Street	Littleton	80123	Jefferson County	Jefferson County School District No. R-1	No	No	No	No	(303) 982-4625	458	28	16.2	21.4%	343 (74.9%)	3 (0.7%)	72 (15.7%)	16 (3.5%)	1 (0.2%)	1 (0.2%)	22 (4.8%)	82.8	154^th of 946 public elementary schools	83.7%		74	235^th of 950 public elementary schools	75.3%	81	53.7	69.8	71.4				64.8	55.9	60.0	63.5				59.7	55.6		$16,896
Doull Elementary School	Public	PK, KG-5	2520 South Utica Street	Denver	80219	Denver County	School District No. 1	No	No	No	Yes	(720) 424-8000	381	24	16.0	85.3%	26 (6.8%)	2 (0.5%)	336 (88.2%)	7 (1.8%)	3 (0.8%)	0 (0.0%)	7 (1.8%)	37.6	544^th of 946 public elementary schools	42.5%		30	615^th of 950 public elementary schools	35.3%	71	27.8	48.1	57.6				47.4	27.9	19.6	45.5				29.5	25.0		$20,112

Frequently Asked Questions about Addenbrooke Classical Grammar School

What is the racial makeup of Addenbrooke Classical Grammar School?

Students at Addenbrooke Classical Grammar School are 62% White, 30% Hispanic, 3% Asian, 3% Two or more races, 1% African American.

Is Addenbrooke Classical Grammar School a good school?

Addenbrooke Classical Grammar School ranks 425^th of 946 Colorado elementary schools. SchoolDigger rates this school 3 stars out of 5.

What district is Addenbrooke Classical Grammar School in?

Jefferson County School District No. R-1

How many students attend Addenbrooke Classical Grammar School?

In the 2024-25 school year, 774 students attended Addenbrooke Classical Grammar School.

Rate Addenbrooke Classical Grammar School!

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Latest Colorado data All new data »

2025–26 CMAS, PSAT10, PSAT9 & SAT test scoresAug 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.