Best High Schools in Illinois

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Find the best Illinois high schools with SchoolDigger.com! Focused on test scores for accurate rankings, our user-friendly site simplifies your search. Empower your decisions by exploring top-rated schools, only on SchoolDigger.com - the ultimate guide to K-12 schools!

Year after year, SchoolDigger is always the first to publish Illinois test scores and rankings. Other sites use stale test score data that are several years old! Be in the know with the very latest performance metrics.

The list is updated annually upon the release of the PreACT Secure and ACT test scores by the Illinois State Board of Education. The most recent update was on Thursday, October 30, 2025.

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School														Students/Teachers											Per Pupil Expenditures (2025)							Ranking (2025 vs 2024)					ID
Rank (of 698)	School	Type	Grades	Address	City	Zip	County	District	Is Charter	Is Magnet	Is Virtual	Is Title I	Phone	# Students	Full-time Teachers	Student/ Teacher Ratio	Free/Disc Lunch Recipients	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Per Pupil Expenditures: Total	Personnel from Federal Funds	Non-Personnel from Federal Funds	Total from Federal Funds	Personnel from State and Local Funds	Non-Personnel from State and Local Funds	Total from State and Local Funds	Average Standard Score (2025)	Average Standard Score (2024)	Rank (2024)	Rank Change from 2024	SchoolDigger Rating (2025)	ID
21	Glenbrook South High School	Public	9-12	4000 W Lake Ave	Glenview	60026	Cook County	Glenbrook HSD 225	No	(n/a)	No	Yes	(847) 729-2000	2,923	227	12.8		1,577 (54.0%)	53 (1.8%)	466 (15.9%)	675 (23.1%)	2 (0.1%)	5 (0.2%)	145 (5.0%)	$29,079			$425			$28,654	96.5	98.2	26	5		172901003043
22	Vernon Hills High School	Public	9-12	145 Lakeview Pkwy	Vernon Hills	60061	Lake County	Chsd 128	No	(n/a)	No	Yes	(847) 932-2157	1,419	115	12.3		708 (49.9%)	42 (3.0%)	240 (16.9%)	329 (23.2%)	0 (0.0%)	1 (0.1%)	99 (7.0%)	$32,861			$583			$32,278	96.4	99	17	5		172283004092
23	Naperville North High School	Public	9-12	899 N Mill St	Naperville	60563	DuPage County	Naperville CUSD 203	No	(n/a)	No	No	(630) 420-6480	2,467	196	12.5	18.8%	1,396 (56.6%)	145 (5.9%)	330 (13.4%)	449 (18.2%)	3 (0.1%)	4 (0.2%)	123 (5.0%)	$21,494			$285			$21,209	96.4	98.4	23			172771002940
24	Prospect High School	Public	9-12	801 W Kensington Rd	Mount Prospect	60056	Cook County	Township HSD 214	No	(n/a)	No	No	(847) 718-5200	2,245	130	17.3		1,576 (70.2%)	48 (2.1%)	318 (14.2%)	189 (8.4%)	4 (0.2%)	2 (0.1%)	107 (4.8%)	$25,000			$785			$24,214	96.1	97.8	27	3		170417000114
25	St Charles North High School	Public	9-12	255 Red Gate Rd	Saint Charles	60175	Kane County	St Charles CUSD 303	No	(n/a)	No	No	(331) 228-4400	1,903	129	14.6		1,359 (71.4%)	41 (2.2%)	238 (12.5%)	188 (9.9%)	7 (0.4%)	1 (0.1%)	69 (3.6%)	$18,959			$341			$18,617	96	97.5	28	3		173717004064
26	Lake Zurich High School	Public	9-12	300 Church St	Lake Zurich	60047	Lake County	Lake Zurich CUSD 95	No	(n/a)	No	No	(847) 438-5155	1,839	128	14.3		1,421 (77.3%)	22 (1.2%)	172 (9.4%)	176 (9.6%)	11 (0.6%)	4 (0.2%)	32 (1.7%)	$19,091			$430			$18,662	95.8	98.3	24	2		172190002460
27	Dunlap High School	Public	9-12	5220 W Legion Hall Rd	Dunlap	61525	Peoria County	Dunlap CUSD 323	No	(n/a)	No	No	(309) 243-7751	1,420	78	18.3	18.5%	879 (61.9%)	108 (7.6%)	66 (4.6%)	286 (20.1%)	1 (0.1%)	0 (0.0%)	80 (5.6%)	$11,589			$369			$11,221	95.7	97.4	29	2		171270001522
28	Wm Fremd High School	Public	9-12	1000 S Quentin Rd	Palatine	60067	Cook County	Township HSD 211	No	(n/a)	No	No	(847) 755-2610	2,689	162	16.5	23.4%	1,222 (45.4%)	111 (4.1%)	360 (13.4%)	873 (32.5%)	2 (0.1%)	1 (0.0%)	118 (4.4%)	$22,136			$780			$21,355	95.6	99.1	16	12		173045003168
29	Geneva Community High School	Public	9-12	416 McKinley Ave	Geneva	60134	Kane County	Geneva CUSD 304	No	(n/a)	No	Yes	(630) 463-3800	1,635	123	13.2		1,300 (79.5%)	17 (1.0%)	193 (11.8%)	48 (2.9%)	2 (0.1%)	1 (0.1%)	74 (4.5%)	$18,274			$264			$18,011	95.5	96.1	37	8		171638001955
30	York Community High School	Public	9-12	355 W Saint Charles Rd	Elmhurst	60126	DuPage County	Elmhurst School District 205	No	(n/a)	No	Yes	(630) 617-2400	2,590	182	14.2	18.3%	1,788 (69.0%)	40 (1.5%)	493 (19.0%)	155 (6.0%)	2 (0.1%)	0 (0.0%)	111 (4.3%)	$19,434			$271			$19,163	95.4	95.5	42	12		171397001755

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About our rankings:

Schooldigger calculates school rankings based on PreACT Secure English Language Arts, PreACT Secure Mathematics, PreACT Secure Science, ACT English Language Arts, ACT Mathematics, ACT Science test scores released by the Illinois State Board of Education.
These rankings were last updated on October 30, 2025, and are based on the most recent test scores available. We update rankings as we receive new test scores from the Illinois State Board of Education, usually on a yearly basis.
Our sources of data include the National Center for Education Statistics, U.S. Department of Education and the Illinois State Board of Education.
For more information about our ranking process, please see our Ranking FAQ. Details about our methodology are here.

Educational resources:

Alternative Schools vs Public Schools: A Comparison

Student-Teacher Ratios and their Impact on Class Sizes & School Selection

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.