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Community H S District 99 - South High School

Public Grades 9-12

60^th

SchoolDigger Rank ?

of 698 Illinois High Schools

Better than 91% of Illinois high schools

Summary

Community H S District 99 - South High School is a top-performing public high school located in Downers Grove, Illinois, serving 2,604 students in grades 9-12. The school consistently ranks among the best in the state, with exceptional academic achievements, high graduation rates, and strong support for diverse student populations.

Community H S District 99 - South High School's students excel on standardized tests, with 70.9% proficient or better in ACT/English Language Arts, 62.2% in ACT/Mathematics, and 69.9% in ACT/Science for the 11th grade in 2024-2025. These scores are significantly higher than the district and state averages. The school maintains a high four-year graduation rate, ranging from 87.7% to 93.4%, and a low dropout rate of 1.0% to 2.7%. Community H S District 99 - South High School also performs exceptionally well across various student subgroups, including female, male, Asian, African American, Hispanic, White, and multi-racial students, as well as English Language Learners, Special Education students, and students from low socioeconomic backgrounds.

Compared to nearby schools, Community H S District 99 - South High School stands out as a premier educational institution in the region. While Glenbard East High School, Bolingbrook High School, and Willowbrook High School have lower academic performance, Hinsdale Central High School, located just a few miles away, is another top-performing school in the region, with even higher academic achievements. Despite the school's exceptional performance, the chronic absenteeism rate at Community H S District 99 - South High School is relatively high, ranging from 23.3% to 26.3%, which may be an area for the school to focus on improving.

2,591

Students ?

14.6

Student/teacher ratio ?

$23,511

Per pupil spending ?

17.1%

Free/discounted lunch ?

1436 Norfolk St
Downers Grove, IL 60516-2632

(630) 795-8501

District: Chsd 99

Feeder schools for Community H S District 99 - South High School:

Elementary:	Edgewood Elementary School
	El Sierra Elementary School
	Elizabeth Ide Elementary School
	Fairmount Elementary School
	More...
	Indian Trail Elementary School
	John L Sipley Elementary School
	Kingsley Elementary School
	Prairieview Elementary School
	William F Murphy Elementary School
Middle:	Lakeview Junior High School
	O Neill Middle School

Racial breakdown:

White:

54.1%

Hispanic:

22.9%

African American:

11.2%

See top rated Illinois high schools

Compare Community H S District 99 - South High School to nearby high schools!

At a glance

▲ Ranking trend: Improving — 81st percentile in 2015 → 91st in 2025

Strengths

✓Test scores above the Illinois average (65% vs 48% meeting standards)

✓Ranks in the top 9% of Illinois high schools

✓Ranking is trending up — up 10 percentile points since 2015

Worth a look

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

Students meeting standards (2024-2025) ?

This school65%

District avg69%

Illinois avg48%

60^th of 698

Illinois public high schools ?

Top 9%▲ up 11 pts since 2015

From top 19% (2015) to top 9% (2025)

See the entire ranking list of Illinois High Schools →

★★★★★

SchoolDigger rating ?

2^nd of 2High Schools in the Chsd 99

47^th of 811Chsd 99 among Illinois 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	Illinois percentile	Rating
2025	89.1	60 of 698	91.4%	★★★★★
2024	79.9	113 of 697	83.8%	★★★★☆
2023	86.3	77 of 699	89.0%	★★★★☆
2022	80.4	110 of 699	84.3%	★★★★☆
2021	87.7	79 of 688	88.5%	★★★★☆
2019	81.3	104 of 701	85.2%	★★★★☆
2018	77.4	120 of 647	81.5%	★★★★☆
2017	81.8	94 of 642	85.4%	★★★★☆
2016	59.8	183 of 643	71.5%	★★★★☆
2015	74.5	119 of 614	80.6%	★★★★☆
2014	80.6	126 of 670	81.2%	★★★★☆
2013	81.0	115 of 670	82.8%	★★★★☆
2012	83.4	89 of 665	86.6%	★★★★☆
2011	81.7	99 of 655	84.9%	★★★★☆
2010	86.8	61 of 643	90.5%	★★★★★
2009	84.9	71 of 632	88.8%	★★★★☆
2008	84.6	74 of 624	88.1%	★★★★☆
2007	82.8	83 of 612	86.4%	★★★★☆
2006	82.5	80 of 596	86.6%	★★★★☆
2005	79.8	88 of 590	85.1%	★★★★☆
2004	82.8	70 of 592	88.2%	★★★★☆
2003	81.4	80 of 586	86.3%	★★★★☆

African American

Year	Avg score	Statewide rank	Illinois percentile	Rating
2025	71.9	67 of 323	79.3%	★★★★☆
2024	42.9	129 of 299	56.9%	★★★☆☆
2023	70.4	49 of 301	83.7%	★★★★☆
2022	48.5	112 of 294	61.9%	★★★☆☆
2021	64.9	55 of 281	80.4%	★★★★☆
2019	60.8	76 of 299	74.6%	★★★★☆
2018	70.4	46 of 253	81.8%	★★★★☆

Asian

Year	Avg score	Statewide rank	Illinois percentile	Rating
2025	59.7	59 of 148	60.1%	★★★☆☆
2024	36.7	91 of 137	33.6%	★★☆☆☆
2023	60.5	55 of 134	59.0%	★★★☆☆
2022	56.0	68 of 141	51.8%	★★★☆☆
2021	34.6	96 of 135	28.9%	★★☆☆☆
2019	35.8	90 of 130	30.8%	★★☆☆☆
2018	43.3	81 of 132	38.6%	★★☆☆☆

Disabled

Year	Avg score	Statewide rank	Illinois percentile	Rating
2025	86.6	36 of 491	92.7%	★★★★★
2024	80.4	52 of 429	87.9%	★★★★☆
2023	83.6	37 of 428	91.4%	★★★★★

English Language Learner

Year	Avg score	Statewide rank	Illinois percentile	Rating
2025	82.0	24 of 284	91.5%	★★★★★
2024	36.3	131 of 248	47.2%	★★☆☆☆
2023	38.8	120 of 217	44.7%	★★☆☆☆
2022	56.3	56 of 205	72.7%	★★★★☆
2021	64.5	26 of 189	86.2%	★★★★☆
2019	41.2	86 of 183	53.0%	★★★☆☆
2018	53.3	36 of 151	76.2%	★★★★☆

Female

Year	Avg score	Statewide rank	Illinois percentile	Rating
2025	86.6	68 of 685	90.1%	★★★★★
2024	78.8	117 of 664	82.4%	★★★★☆
2023	84.9	84 of 656	87.2%	★★★★☆
2022	79.4	118 of 658	82.1%	★★★★☆
2021	87.3	79 of 639	87.6%	★★★★☆
2019	76.9	123 of 665	81.5%	★★★★☆
2018	73.4	144 of 620	76.8%	★★★★☆

Hispanic

Year	Avg score	Statewide rank	Illinois percentile	Rating
2025	79.9	54 of 366	85.2%	★★★★☆
2024	58.6	101 of 336	69.9%	★★★★☆
2023	64.6	79 of 333	76.3%	★★★★☆
2022	52.5	135 of 335	59.7%	★★★☆☆
2021	49.6	114 of 317	64.0%	★★★☆☆
2019	46.0	143 of 317	54.9%	★★★☆☆
2018	52.1	117 of 291	59.8%	★★★☆☆

Homeless

Year	Avg score	Statewide rank	Illinois percentile	Rating
2024	63.4	31 of 125	75.2%	★★★★☆
2023	28.1	55 of 104	47.1%	★☆☆☆☆

Low Socio Economic Status

Year	Avg score	Statewide rank	Illinois percentile	Rating
2025	76.0	106 of 672	84.2%	★★★★☆
2024	59.8	198 of 639	69.0%	★★★☆☆
2023	61.9	194 of 644	69.9%	★★★★☆
2022	66.1	155 of 626	75.2%	★★★★☆
2021	71.7	108 of 611	82.3%	★★★★☆
2019	65.6	151 of 639	76.4%	★★★★☆
2018	56.7	217 of 585	62.9%	★★★☆☆

Male

Year	Avg score	Statewide rank	Illinois percentile	Rating
2025	88.7	60 of 685	91.2%	★★★★★
2024	78.1	123 of 668	81.6%	★★★★☆
2023	85.0	78 of 668	88.3%	★★★★☆
2022	78.4	110 of 664	83.4%	★★★★☆
2021	84.6	87 of 653	86.7%	★★★★☆
2019	82.6	92 of 675	86.4%	★★★★☆
2018	78.0	112 of 619	81.9%	★★★★☆

Multi-racial

Year	Avg score	Statewide rank	Illinois percentile	Rating
2025	68.0	62 of 211	70.6%	★★★★☆
2024	52.1	79 of 182	56.6%	★★★☆☆
2023	64.7	53 of 163	67.5%	★★★☆☆
2022	69.1	47 of 170	72.4%	★★★★☆
2021	90.7	18 of 160	88.8%	★★★★☆
2019	75.2	39 of 165	76.4%	★★★★☆
2018	71.4	39 of 154	74.7%	★★★★☆

Special Education

Year	Avg score	Statewide rank	Illinois percentile	Rating
2025	90.7	46 of 527	91.3%	★★★★★
2024	90.1	49 of 482	89.8%	★★★★★
2023	94.4	33 of 476	93.1%	★★★★★
2022	66.7	69 of 493	86.0%	★★★★☆
2021	67.6	82 of 453	81.9%	★★★★☆
2019	58.2	100 of 473	78.9%	★★★★☆
2018	67.1	66 of 374	82.4%	★★★★☆

White

Year	Avg score	Statewide rank	Illinois percentile	Rating
2025	90.6	53 of 564	90.6%	★★★★★
2024	83.2	84 of 554	84.8%	★★★★☆
2023	86.3	53 of 557	90.5%	★★★★★
2022	85.0	68 of 560	87.9%	★★★★☆
2021	91.6	54 of 553	90.2%	★★★★★
2019	87.9	60 of 552	89.1%	★★★★☆
2018	78.2	104 of 548	81.0%	★★★★☆

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)

Disabled (2025)93rd percentile~ school

English Language Learner (2025)92nd percentile~ school

Special Education (2025)91st percentile~ school

Male (2025)91st percentile~ school

White (2025)91st percentile~ school

Female (2025)90th percentile~ school

Hispanic (2025)85th percentile-6 vs school

Low Socio Economic Status (2025)84th percentile-7 vs school

African American (2025)79th percentile-12 vs school

Homeless (2024)75th percentile-9 vs school

Multi-racial (2025)71st percentile-21 vs school

Asian (2025)60th percentile-31 vs school

By subject vs Illinois (2024-2025) ?

English Language Arts71%+19 vs state

Science70%+21 vs state

Mathematics62%+23 vs state

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What people are saying

by a parent
Sunday, March 25, 2012

This school, if you can call it that, is greatly becoming one of the worst high schools in the Chicago area. I'm a parent of a student who went to this school, and by junior year we had transferred our student out. Most of the staff I had dealt with are rude, accusatory and not helpful. The students at this school have serious behavior problems, in some cases criminal. While this school succeeds at athletics, academics aren't adequate. The building is poorly maintained, with no central air conditioning in most of the building. Recently, there was even a suicide committed by a student due to the horrible harassment and bullying by peers, and staff and officials publicly blame it on a state of mental health. This is not true, in fact. All his life, my student had no signs of any personal issues beforehand, and now he is talking about how there is nothing good to life, and lost interest in previous activities. There were numerous other issues worthy of a civil lawsuit that are too detailed to discuss. For your own sake, please avoid this school at all cost. You will thank me for it. Close Quote

Schools Near Community H S District 99 - South High 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 Immunizations Finance All

School													Students/Teachers											Ranking (2025)				Ranking (2024)				PreACT Secure English Language Arts (2025)		PreACT Secure Mathematics (2025)		PreACT Secure Science (2025)		ACT English Language Arts (2025)	ACT Mathematics (2025)	ACT Science (2025)	% Polio (2024)	% Measles (2024)	% Mumps (2024)	% Rubella (2024)	% Hepatitis B (2024)	% Varicella (2024)	% DTP (2024)	% Meningococcal (2024)	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	PreACT Secure English Language Arts 9th Grade	PreACT Secure English Language Arts 10th Grade	PreACT Secure Mathematics 9th Grade	PreACT Secure Mathematics 10th Grade	PreACT Secure Science 9th Grade	PreACT Secure Science 10th Grade	ACT English Language Arts 11th Grade	ACT Mathematics 11th Grade	ACT Science 11th Grade	% Polio All Grades	% Measles All Grades	% Mumps All Grades	% Rubella All Grades	% Hepatitis B All Grades	% Varicella All Grades	% DTP All Grades	% Meningococcal All Grades	Per Pupil Expenditures Total	Sub-total from Federal Funds	Sub-total from State/Local Funds
Community H S District 99 - South High School	Public	9-12	1436 Norfolk St	Downers Grove	60516	DuPage County	Chsd 99	No	(n/a)	No	Yes	(630) 795-8501	2,591	176	14.6		1,401 (54.1%)	290 (11.2%)	594 (22.9%)	186 (7.2%)	2 (0.1%)	7 (0.3%)	109 (4.2%)	89.1	60^th of 698 public high schools	91.4%		79.9	113^th of 697 public high schools	83.8%	53	75.2	73.7	51.6	46.0	65.5	71.2	70.9	62.2	69.9	98.7	98.7	98.7	98.7	98.7	98.7	98.7	98.1	$23,511	$630	$22,881
Community High School District 99 - North High School	Public	9-12	4436 Main St	Downers Grove	60515	DuPage County	Chsd 99	No	(n/a)	No	No	(630) 795-8401	2,082	152	13.7		1,443 (69.3%)	90 (4.3%)	307 (14.7%)	138 (6.6%)	3 (0.1%)	5 (0.2%)	95 (4.6%)	95	34^th of 698 public high schools	95.1%		96.8	32^nd of 697 public high schools	95.4%	2	83.3	80.9	71.5	57.6	69.3	74.4	76.0	72.2	75.2	98.2	98.2	98.2	98.2	98.2	98.0	98.2	98.0	$24,548	$410	$24,138
HSD 86 Adult Opportunties Pgm	Public	12	7302 Clarendon Hills Rd	Darien	60561	DuPage County	Hinsdale Township HSD 86	No	(n/a)	No	No	(630) 468-4318	0	15	.0		0 ()	0 ()	0 ()	0 ()	0 ()	0 ()	0 ()								(n/a)
Lisle High School	Public	9-12	1800 Short St	Lisle	60532	DuPage County	Lisle CUSD 202	No	(n/a)	No	No	(630) 493-8300	447	40	11.1	35.1%	243 (54.4%)	44 (9.8%)	102 (22.8%)	25 (5.6%)	0 (0.0%)	1 (0.2%)	31 (6.9%)	92	48^th of 698 public high schools	93.1%		88.1	77^th of 697 public high schools	89.0%	29	82.9	68.0	58.1	52.6	70.5	66.0	76.1	69.2	74.4	98.0	98.4	98.4	98.4	98.4	98.2	98.6	97.3	$31,557	$472	$31,085
Hinsdale South High School	Public	9-12	7401 Clarendon Hills Rd	Darien	60561	DuPage County	Hinsdale Township HSD 86	No	(n/a)	No	Yes	(630) 468-4000	1,370	109	12.6		677 (49.4%)	246 (18.0%)	238 (17.4%)	138 (10.1%)	2 (0.1%)	1 (0.1%)	68 (5.0%)	86.4	76^th of 698 public high schools	89.1%		92.3	59^th of 697 public high schools	91.5%	17	78.9	69.3	57.9	50.0	63.7	62.0	65.5	53.2	59.7	98.5	98.3	98.3	98.3	98.4	98.3	98.2	97.2	$32,228	$680	$31,548
Westmont High School	Public	9-12	909 Oakwood Dr	Westmont	60559	DuPage County	Cusd 201	No	(n/a)	No	Yes	(630) 468-8100	395	34	11.4	38.5%	194 (49.1%)	25 (6.3%)	124 (31.4%)	27 (6.8%)	1 (0.3%)	0 (0.0%)	22 (5.6%)	92.7	42^nd of 698 public high schools	94.0%		95.6	41^st of 697 public high schools	94.1%	1	83.7	78.3	62.2	53.3	73.5	55.4	81.2	72.9	76.5	98.2	98.0	98.0	98.0	98.5	98.2	98.5	97.0	$34,070	$848	$33,222
Hinsdale Central High School	Public	9-12	5500 S Grant St	Hinsdale	60521	DuPage County	Hinsdale Township HSD 86	No	(n/a)	No	No	(630) 570-8000	2,445	174	14.0		1,465 (59.9%)	65 (2.7%)	240 (9.8%)	514 (21.0%)	1 (0.0%)	3 (0.1%)	156 (6.4%)	98.4	12^th of 698 public high schools	98.3%		99.8	10^th of 697 public high schools	98.6%	2	90.2	89.3	82.5	80.8	79.7	85.5	87.8	81.5	82.5	100.0	100.0	100.0	100.0	100.0	100.0	100.0	99.0	$25,121	$255	$24,867
Glenbard South High School	Public	9-12	23W200 Butterfield Rd	Glen Ellyn	60137	DuPage County	Glenbard Township HSD 87	No	(n/a)	No	No	(630) 469-6500	1,090	69	15.7	29.4%	605 (55.5%)	106 (9.7%)	199 (18.3%)	133 (12.2%)	1 (0.1%)	4 (0.4%)	42 (3.9%)	90.4	57^th of 698 public high schools	91.8%		91.1	62^nd of 697 public high schools	91.1%	5	78.1	72.1	56.1	52.0	65.4	67.9	73.4	58.9	72.6	98.3	98.2	98.2	98.2	98.5	97.9	98.5	97.5	$24,403	$531	$23,871
Glenbard East High School	Public	9-12	1014 S Main St	Lombard	60148	DuPage County	Glenbard Township HSD 87	No	(n/a)	No	Yes	(630) 627-9250	2,311	137	16.9	47.9%	840 (36.3%)	218 (9.4%)	936 (40.5%)	258 (11.2%)	4 (0.2%)	2 (0.1%)	53 (2.3%)	65.5	203^rd of 698 public high schools	70.9%		69.3	165^th of 697 public high schools	76.3%	38	64.6	55.5	39.4	36.0	54.9	51.0	47.3	39.8	49.2	97.5	97.6	97.6	97.6	97.6	96.1	96.8	97.3	$21,091	$522	$20,569
Bolingbrook High School	Public	9-12	365 Raider Way	Bolingbrook	60440	Will County	Valley View CUSD 365U	No	(n/a)	No	Yes	(630) 759-6400	3,298	247	13.3	53.3%	477 (14.5%)	840 (25.5%)	1,553 (47.1%)	232 (7.0%)	6 (0.2%)	2 (0.1%)	188 (5.7%)	56.3	282^nd of 698 public high schools	59.6%		54.2	270^th of 697 public high schools	61.3%	12	58.1	51.7	30.6	28.9	49.9	52.7	47.7	33.4	44.3									$19,403	$796	$18,606

Frequently Asked Questions about Community H S District 99 - South High School

Is Community H S District 99 - South High School a good school?

Yes. Community H S District 99 - South High School ranks in the top 8.6% of Illinois high schools.

What district is Community H S District 99 - South High School in?

Chsd 99

How many students attend Community H S District 99 - South High School?

In the 2024-25 school year, 2,591 students attended Community H S District 99 - South High School.

What schools feed into Community H S District 99 - South High School?

What is the racial makeup of Community H S District 99 - South High School?

Students at Community H S District 99 - South High School are 54% White, 23% Hispanic, 11% African American, 7% Asian, 4% Two or more races.

Rate Community H S District 99 - South High School!

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Latest Illinois data All new data »

2024–25 school spending dataOct 30, 2025

2024–25 attendance data, dropout rates & graduation ratesOct 30, 2025

2024–25 ACT, IAR, ISA & PreACT Secure test scoresOct 30, 2025

2023–24 school spending dataOct 30, 2024

SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau, the Illinois Department of Public Health and the Illinois State Board 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.