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Rocketship Delta Prep

Q: Is Rocketship Delta Prep a good school?

Rocketship Delta Prep ranks 3848 th of 5857 California elementary schools. SchoolDigger rates this school 2 stars out of 5.

Public, Charter Grades K-5

3848^th

SchoolDigger Rank ?

of 5,857 California Elementary Schools

Better than 34% of California elementary schools

Summary

Rocketship Delta Prep is a public charter elementary school serving about 540 students in grades K-5 in Antioch, California, operating within the Rocketship Delta Prep District.

While its academic proficiency rates are below the state average, Rocketship Delta Prep consistently outperforms most nearby traditional public schools in the Antioch Unified district, particularly in mathematics. The school has shown remarkable improvement, climbing from a very low state ranking to a solid 2-star rating in recent years. It operates with a significantly different model, featuring a much higher student-teacher ratio of 36-to-1 compared to the 19-to-1 or 22-to-1 ratios at schools like Sutter Elementary or Mission Elementary, and does so with lower per-student spending.

Notably, Rocketship Delta Prep shows particular strength in serving African American students, ranking in the 73rd percentile statewide for that subgroup. The school's performance improves as students advance, with 5th graders scoring much higher than 3rd graders. However, challenges remain with chronic absenteeism, though it has improved and is now comparable to other local schools. Among the highest-performing schools in the immediate area are other charters, Antioch Charter Academy and Antioch Charter Academy II, suggesting the charter model is having a relative impact in this community.

540

Students ?

36.0

Student/teacher ratio ?

$30,076

Per pupil spending ?

55.7%

Free/discounted lunch ?

1700 Cavallo Rd.
Antioch, CA 94509-1930

(877) 806-0920

District: Rocketship Delta Prep District

Racial breakdown:

Hispanic:

56.1%

African American:

34.8%

Two or more races:

3.3%

See top rated California elementary schools

Compare Rocketship Delta Prep to nearby elementary schools!

At a glance

▼ Ranking trend: Recently slipping — 45th percentile in 2022 → 34th in 2025

Worth a look

!Test scores below the California average (30% vs 41% meeting standards)

!High chronic absenteeism (32% vs 19% California)

!Ranking has slipped from its 45th-percentile peak (2022) to 34th (2025)

Students meeting standards (2024-2025) ?

This school30%

California avg41%

3,848^th of 5,857

California public elementary schools ?

Bottom 34%▲ up 25 pts since 2019

From bottom 9% (2019) to bottom 34% (2025)

See the entire ranking list of California Elementary Schools →

★★★★★

SchoolDigger rating ?

1094^th of 1,543Rocketship Delta Prep District among California 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	California percentile	Rating
2025	31.4	3848 of 5857	34.3%	★★☆☆☆
2024	30.8	3874 of 5869	34.0%	★★☆☆☆
2023	29.1	3969 of 5859	32.3%	★★☆☆☆
2022	37.8	3240 of 5883	44.9%	★★☆☆☆
2019	14.6	5271 of 5789	8.9%	☆☆☆☆☆

African American

Year	Avg score	Statewide rank	California percentile	Rating
2025	64.5	154 of 569	72.9%	★★★★☆
2024	57.5	190 of 593	68.0%	★★★☆☆
2023	56.5	231 of 661	65.1%	★★★☆☆
2022	75.3	105 of 663	84.2%	★★★★☆
2019	22.2	635 of 747	15.0%	★☆☆☆☆

English Language Learner

Year	Avg score	Statewide rank	California percentile	Rating
2024	41.9	1686 of 3162	46.7%	★★☆☆☆
2023	70.4	484 of 3245	85.1%	★★★★☆
2022	74.7	396 of 3311	88.0%	★★★★☆

Female

Year	Avg score	Statewide rank	California percentile	Rating
2025	30.3	3831 of 5597	31.6%	★★☆☆☆
2024	28.7	3906 of 5612	30.4%	★★☆☆☆
2023	26.4	4099 of 5609	26.9%	★☆☆☆☆
2022	36.4	3240 of 5635	42.5%	★★☆☆☆
2019	23.9	4308 of 5492	21.6%	★☆☆☆☆

Hispanic

Year	Avg score	Statewide rank	California percentile	Rating
2025	44.4	2696 of 5107	47.2%	★★☆☆☆
2024	44.6	2636 of 5107	48.4%	★★☆☆☆
2023	39.2	2972 of 5087	41.6%	★★☆☆☆
2022	50.7	2163 of 5084	57.5%	★★★☆☆
2019	50.2	2275 of 4963	54.2%	★★★☆☆

Low Socio Economic Status

Year	Avg score	Statewide rank	California percentile	Rating
2025	38.9	3274 of 5460	40.0%	★★☆☆☆
2024	36.8	3379 of 5517	38.8%	★★☆☆☆
2023	39.0	3137 of 5363	41.5%	★★☆☆☆
2022	54.2	2026 of 5264	61.5%	★★★☆☆
2019	17.9	4700 of 5173	9.1%	☆☆☆☆☆

Male

Year	Avg score	Statewide rank	California percentile	Rating
2025	33.5	3581 of 5628	36.4%	★★☆☆☆
2024	33.6	3512 of 5643	37.8%	★★☆☆☆
2023	32.9	3551 of 5638	37.0%	★★☆☆☆
2022	39.9	3015 of 5663	46.8%	★★☆☆☆
2019	9.8	5355 of 5510	2.8%	☆☆☆☆☆

Special Education

Year	Avg score	Statewide rank	California percentile	Rating
2023	17.9	2273 of 2420	6.1%	☆☆☆☆☆

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)

African American (2025)73rd percentile+39 vs school

Hispanic (2025)47th percentile+13 vs school

English Language Learner (2024)47th percentile+13 vs school

Low Socio Economic Status (2025)40th percentile+6 vs school

Male (2025)36th percentile~ school

Female (2025)32nd percentile-3 vs school

Special Education (2023)6th percentile-26 vs school

By subject vs California (2024-2025) ?

Mathematics32%-5 vs state

English Language Arts/Literacy30%-19 vs state

Science28%-5 vs state

★

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Schools Near Rocketship Delta Prep

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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 Immunizations Finance All

School													Students/Teachers											Ranking (2025)				Ranking (2024)				CAST Science (2025)			Smarter Balanced Assessments English Language Arts/Literacy (2025)							Smarter Balanced Assessments Mathematics (2025)							% Completely Immunized (2022)	% Polio (2022)	% Hepatitis B (2022)	% Varicella (2022)	% DTP (2022)	% MMR (2022)	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 (2025)	Statewide Rank (2025)	State Percentile (2025)	SchoolDigger Rating (2025)	Average Standard Score (2024)	Statewide Rank (2024)	State Percentile (2024)	Rank Change from Previous Year	CAST Science 5th Grade	CAST Science 8th Grade	CAST Science All Grades	Smarter Balanced Assessments English Language Arts/Literacy 3rd Grade	Smarter Balanced Assessments English Language Arts/Literacy 4th Grade	Smarter Balanced Assessments English Language Arts/Literacy 5th Grade	Smarter Balanced Assessments English Language Arts/Literacy 6th Grade	Smarter Balanced Assessments English Language Arts/Literacy 7th Grade	Smarter Balanced Assessments English Language Arts/Literacy 8th Grade	Smarter Balanced Assessments English Language Arts/Literacy All Grades	Smarter Balanced Assessments Mathematics 3rd Grade	Smarter Balanced Assessments Mathematics 4th Grade	Smarter Balanced Assessments Mathematics 5th Grade	Smarter Balanced Assessments Mathematics 6th Grade	Smarter Balanced Assessments Mathematics 7th Grade	Smarter Balanced Assessments Mathematics 8th Grade	Smarter Balanced Assessments Mathematics All Grades	% Completely Immunized KG	% Polio KG	% Hepatitis B KG	% Varicella KG	% DTP KG	% MMR KG	Per Pupil Expenditures Total	Sub-total from Federal Funds	Sub-total from State/Local Funds
Rocketship Delta Prep	Public, Charter	K-5	1700 Cavallo Rd.	Antioch	94509	Contra Costa County	Rocketship Delta Prep District	Yes	(n/a)	No	(n/a)	(877) 806-0920	540	15	36.0	55.7%	9 (1.7%)	188 (34.8%)	303 (56.1%)	13 (2.4%)	1 (0.2%)	8 (1.5%)	18 (3.3%)	31.4	3848^th of 5857 public elementary schools	34.3%		30.8	3874^th of 5869 public elementary schools	34.0%	26	27.9		27.9	18.8	24.0	44.3				29.6	30.4	34.7	30.4				31.8	94.6	97.7		97.7	96.9	95.4	$30,076	$28,268	$1,808
Kimball Elementary	Public	K-5	1310 August Way	Antioch	94509	Contra Costa County	Antioch Unified	No	(n/a)	No	(n/a)	(925) 779-7415	450	22	20.0	84.9%	43 (9.6%)	93 (20.7%)	267 (59.3%)	15 (3.3%)	3 (0.7%)	5 (1.1%)	22 (4.9%)	12.4	5468^th of 5857 public elementary schools	6.6%		16.4	5182^nd of 5869 public elementary schools	11.7%	286	11.1		11.1	17.1	25.0	22.8				21.4	17.8	8.9	14.8				14.3	92.2			96.7	94.4	96.7	$33,341	$29,860	$3,481
Belshaw Elementary	Public	K-5	2801 Roosevelt Ln.	Antioch	94509	Contra Costa County	Antioch Unified	No	(n/a)	No	(n/a)	(925) 779-7495	431	19	22.6	83.3%	55 (12.8%)	73 (16.9%)	257 (59.6%)	14 (3.2%)	2 (0.5%)	11 (2.6%)	19 (4.4%)	9.4	5665^th of 5857 public elementary schools	3.3%		12.2	5539^th of 5869 public elementary schools	5.6%	126	8.5		8.5	18.7	6.0	19.7				15.0	22.1	4.5	9.9				12.6	91.4	97.1		95.7	94.3		$29,424	$27,224	$2,200
Fremont Elementary	Public	K-5	1413 F St.	Antioch	94509	Contra Costa County	Antioch Unified	No	(n/a)	No	(n/a)	(925) 779-7405	482	24	19.9	74.9%	30 (6.2%)	77 (16.0%)	335 (69.5%)	7 (1.5%)	8 (1.7%)	12 (2.5%)	13 (2.7%)	8.3	5717^th of 5857 public elementary schools	2.4%		8.9	5730^th of 5869 public elementary schools	2.4%	13	7.6		7.6	18.9	9.2	15.2				14.6	18.9	9.2	4.7				11.3	92.1	96.1	97.4	97.4	93.4	97.4	$25,097	$22,782	$2,315
Marsh Elementary	Public	K-5	2304 G St.	Antioch	94509	Contra Costa County	Antioch Unified	No	(n/a)	No	(n/a)	(925) 779-7410	522	24	21.6	81.4%	25 (4.8%)	128 (24.5%)	318 (60.9%)	19 (3.6%)	0 (0.0%)	14 (2.7%)	18 (3.4%)	5.8	5814^th of 5857 public elementary schools	0.7%		5.9	5845^th of 5869 public elementary schools	0.4%	31	7.5		7.5	4.1	7.1	16.7				9.5	9.5	4.9	4.4				6.0	90.0	93.0	96.0	96.0	93.0	96.0	$22,701	$20,110	$2,591
Antioch Charter Academy II	Public, Charter	K-8	1201 West Tenth St.	Antioch	94509	Contra Costa County	Antioch Charter Academy II District	Yes	(n/a)	No	(n/a)	(925) 755-1252	204	10	21.4	48.5%	49 (24.0%)	21 (10.3%)	95 (46.6%)	15 (7.4%)	3 (1.5%)	4 (2.0%)	17 (8.3%)	34.7	3605^th of 5857 public elementary schools	38.4%		41.8	3079^th of 5869 public elementary schools	47.5%	526	27.3	47.4	36.6	25.0	19.1	40.9	60.0	73.9	57.9	46.4	15.0	33.3	31.8	30.0	30.4	47.4	31.2
Sutter Elementary	Public	K-5	3410 Longview Rd.	Antioch	94509	Contra Costa County	Antioch Unified	No	(n/a)	No	(n/a)	(925) 779-7425	450	21	20.9	75.8%	68 (15.1%)	66 (14.7%)	252 (56.0%)	39 (8.7%)	2 (0.4%)	3 (0.7%)	20 (4.4%)	19.2	4905^th of 5857 public elementary schools	16.3%		23.3	4550^th of 5869 public elementary schools	22.5%	355	22.4		22.4	20.0	16.4	39.2				25.1	22.2	16.4	18.4				19.1	98.1			98.1		98.1	$27,640	$25,434	$2,206
Antioch Charter Academy	Public, Charter	K-8	3325 Hacienda Way	Antioch	94509	Contra Costa County	Antioch Charter Academy District	Yes	(n/a)	No	(n/a)	(925) 755-7311	202	11	19.0	30.7%	47 (23.3%)	22 (10.9%)	83 (41.1%)	34 (16.8%)	0 (0.0%)	1 (0.5%)	15 (7.4%)	40.2	3200^th of 5857 public elementary schools	45.4%		48.2	2654^th of 5869 public elementary schools	54.8%	546	39.1	22.2	31.7	45.5	40.0	52.2	39.1	41.7	55.6	45.4	31.8	25.0	17.4	26.1	8.3	16.7	20.8
Mission Elementary	Public	K-5	1711 Mission Dr.	Antioch	94509	Contra Costa County	Antioch Unified	No	(n/a)	No	(n/a)	(925) 779-7435	512	24	20.9	82.6%	40 (7.8%)	121 (23.6%)	242 (47.3%)	62 (12.1%)	5 (1.0%)	18 (3.5%)	24 (4.7%)	21	4737^th of 5857 public elementary schools	19.1%		14.7	5333^rd of 5869 public elementary schools	9.1%	596	15.1		15.1	22.5	30.3	29.0				27.0	18.4	33.3	22.6				24.0	76.4	89.1	87.3	89.1	85.5	90.9	$24,043	$21,868	$2,175
Muir (John) Elementary	Public	K-5	615 Greystone Dr.	Antioch	94509	Contra Costa County	Antioch Unified	No	(n/a)	No	(n/a)	(925) 779-7450	660	32	20.6	58.9%	54 (8.2%)	135 (20.5%)	368 (55.8%)	61 (9.2%)	5 (0.8%)	3 (0.5%)	34 (5.2%)	26.2	4301^st of 5857 public elementary schools	26.6%		19.4	4914^th of 5869 public elementary schools	16.3%	613	14.6		14.6	37.0	32.8	36.5				35.3	27.8	25.8	19.8				24.7	91.3	92.1	96.8	92.9	92.1	92.9	$24,720	$22,720	$2,000

Frequently Asked Questions about Rocketship Delta Prep

How many students attend Rocketship Delta Prep?

In the 2024-25 school year, 540 students attended Rocketship Delta Prep.

What is the racial makeup of Rocketship Delta Prep?

Students at Rocketship Delta Prep are 56% Hispanic, 35% African American, 3% Two or more races, 2% Asian, 2% White, 1% Pacific Islander.

What district is Rocketship Delta Prep in?

Rocketship Delta Prep District

Is Rocketship Delta Prep a good school?

Rocketship Delta Prep ranks 3848^th of 5857 California elementary schools. SchoolDigger rates this school 2 stars out of 5.

Rate Rocketship Delta Prep!

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Latest California data All new data »

2024–25 school spending dataJul 1, 2026

2024–25 attendance dataMar 13, 2026

2024–25 CSA Spanish test scoresDec 22, 2025

2024–25 dropout rates & graduation ratesNov 14, 2025

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