Is Grayslake Central High School a good school?

Grayslake Central High School ranks 106 th of 697 Illinois high schools. SchoolDigger rates this school 4 stars out of 5.

How many students attend Grayslake Central High School?

In the 2023-24 school year, 1,375 students attended Grayslake Central High School.

What is the racial makeup of Grayslake Central High School?

Students at Grayslake Central High School are 58% White, 22% Hispanic, 9% Asian, 6% African American, 5% Two or more races.

What schools feed into Grayslake Central High School?

Grayslake Central High School is fed by the following schools: Elementary : Park East School Elementary : Prairieview School Elementary : Woodview School

Grayslake Central High School

Summary:

Grayslake Central High School is a public high school serving grades 9-12 in Grayslake, Illinois, with a student population of 1,419. The school is part of the Grayslake CHSD 127 district, which is ranked 108 out of 813 districts in Illinois and has a 4-star rating from SchoolDigger. Grayslake Central High School has consistently been ranked among the top high schools in Illinois, with a current statewide ranking of 106 out of 697 high schools.

Grayslake Central High School stands out for its strong academic performance, consistently outperforming the state average in standardized test scores, particularly in SAT/English Language Arts and ISA/Science. The school also maintains high graduation rates, with a 94.2% four-year graduation rate, significantly higher than the state average. Additionally, Grayslake Central High School has shown strong performance across various student subgroups, ranking 24th out of 299 Illinois high schools for African American students and 85th out of 137 for Asian students in the 2023-2024 school year.

When compared to nearby high schools, such as Grayslake North High School, Mundelein Cons High School, and Round Lake Senior High School, Grayslake Central High School consistently outperforms them in academic metrics, graduation rates, and student group performance. However, the school has seen an increase in chronic absenteeism, from 11.6% in 2019-2020 to 24.7% in 2023-2024, which is a concerning trend that the school and district should address.

Detail:

Public 9-12

400 N Lake St
Grayslake, IL 60030-1430

(847) 986-3300

District: Grayslake CHSD 127

SchoolDigger Rank:
106^th of 697 Illinois High Schools

Per Pupil Expenditures: $24,078

Feeder schools for Grayslake Central High School:

Elementary:	Park East School
	Prairieview School
	Woodview School

Student/teacher ratio: 13.2

Number of students: 1,375

Racial breakdown:

White:

58.1%

Hispanic:

22.2%

Asian:

8.6%

Free/discounted lunch recipients: 12.1%

See top rated Illinois high schools

Compare Grayslake Central High School to nearby high schools!

Performance Trends

Compare Details Grayslake Central High School ranks better than 84.8% of high schools in Illinois. (See more...)

Compare Details In 2024 the calculated Average Standard Score was 82.07. (See more...)

The four-year cohort graduation rate measures the percentage of students at Grayslake Central High School who earn a standard high school diploma within four years of starting ninth grade.

The high school dropout rate measures the percentage of students who do not complete their high school education.

Chronic absenteeism in a school refers to a situation where students repeatedly miss school, with the threshold often defined as missing 10% or more of school days for any reason, excused or unexcused.

Student Body

Compare Details Racial makeup is: White (58.1%), Hispanic (22.2%), Asian (8.6%). (See more...)

Compare Details

Teachers

Compare Details The student/teacher ratio at Grayslake Central High School is 13.2. (See more...)

Compare Grayslake Central High School employs 104 full-time teachers.

Finance

Compare Details The average total spent per student at Grayslake Central High School is $24,078.

Schooldigger 2024 Rankings:

Grayslake Central High School:

SchoolDigger ranks Grayslake Central High School 106^th of 697 Illinois public high schools. (See Grayslake Central High School in the ranking list.)

High School Test Score Ratings by Student Subgroup:

Multi-racial students:

English Language Learner students:

Special Education students:

Low Socio Economic Status students:

Female students:

Disabled students:

Male students:

Asian students:

African American students:

Hispanic students:

White students:

Grayslake CHSD 127:

SchoolDigger ranks Grayslake CHSD 127 108^th of 813 Illinois school districts. (See district ranking list.)

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Rank History for Grayslake Central High School

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Rank History for all students at Grayslake Central High School

Year	Avg Standard Score	Statewide Rank	Total # Ranked High Schools	IL State Percentile
2003	78.54	104^th	586	82.3%
2004	73.28	139^th	592	76.5%
2005	66.22	198^th	590	66.4%
2006	74.22	138^th	596	76.8%
2007	80.17	105^th	612	82.8%
2008	84.08	77^th	624	87.7%
2009	85.06	70^th	632	88.9%
2010	77.64	124^th	643	80.7%
2011	82.95	90^th	655	86.3%
2012	85.59	74^th	665	88.9%
2013	86.34	74^th	670	89.0%
2014	86.39	79^th	670	88.2%
2015	57.71	217^th	614	64.7%
2016	63.72	156^th	643	75.7%
2017	90.86	48^th	642	92.5%
2018	86.42	69^th	647	89.3%
2019	91.54	49^th	701	93.0%
2021	91.39	61^st	688	91.1%
2022	87.76	67^th	699	90.4%
2023	83.81	89^th	699	87.3%
2024	82.07	106^th	697	84.8%

See the entire list of Illinois High School Rankings!

Rank History for Multi-racial students at Grayslake Central High School

Year	Avg Standard Score	Statewide Rank	Total # Ranked High Schools	IL State Percentile
2018	75.78	36^th	154	76.6%
2019	68.62	49^th	165	70.3%
2021	63.31	52^nd	160	67.5%
2022	76.70	36^th	170	78.8%
2023	79.35	36^th	163	77.9%
2024	52.19	78^th	182	57.1%

See the entire list of Best Illinois High Schools for Multi-racial Students!

Rank History for English Language Learner students at Grayslake Central High School

Year	Avg Standard Score	Statewide Rank	Total # Ranked High Schools	IL State Percentile
2021	62.21	31^st	189	83.6%
2022	52.91	62^nd	205	69.8%
2024	28.56	158^th	248	36.3%

See the entire list of Best Illinois High Schools for English Language Learner Students!

Rank History for Special Education students at Grayslake Central High School

Year	Avg Standard Score	Statewide Rank	Total # Ranked High Schools	IL State Percentile
2018	72.32	56^th	374	85.0%
2019	87.11	30^th	473	93.7%
2021	72.57	62^nd	453	86.3%
2022	63.91	85^th	493	82.8%
2023	88.40	51^st	476	89.3%
2024	58.11	136^th	482	71.8%

See the entire list of Best Illinois High Schools for Special Education Students!

Rank History for Low Socio Economic Status students at Grayslake Central High School

Year	Avg Standard Score	Statewide Rank	Total # Ranked High Schools	IL State Percentile
2018	68.18	121^st	585	79.3%
2019	49.36	302^nd	639	52.7%
2021	39.87	346^th	611	43.4%
2022	69.84	131^st	626	79.1%
2023	60.97	200^th	644	68.9%
2024	72.68	120^th	639	81.2%

See the entire list of Best Illinois High Schools for Low Socio Economic Status Students!

Rank History for Female students at Grayslake Central High School

Year	Avg Standard Score	Statewide Rank	Total # Ranked High Schools	IL State Percentile
2018	79.71	106^th	620	82.9%
2019	87.58	63^rd	665	90.5%
2021	88.57	70^th	639	89.0%
2022	78.19	125^th	658	81.0%
2023	76.55	128^th	656	80.5%
2024	81.96	102^nd	664	84.6%

See the entire list of Best Illinois High Schools for Female Students!

Rank History for Disabled students at Grayslake Central High School

Year	Avg Standard Score	Statewide Rank	Total # Ranked High Schools	IL State Percentile	SchoolDigger Rating
2023	84.62	33^rd	428	92.3%
2024	53.25	120^th	429	72.0%

See the entire list of Best Illinois High Schools for Disabled Students!

Rank History for Male students at Grayslake Central High School

Year	Avg Standard Score	Statewide Rank	Total # Ranked High Schools	IL State Percentile
2018	88.26	56^th	619	91.0%
2019	92.73	43^rd	675	93.6%
2021	91.15	63^rd	653	90.4%
2022	91.41	49^th	664	92.6%
2023	87.28	65^th	668	90.3%
2024	79.44	108^th	668	83.8%

See the entire list of Best Illinois High Schools for Male Students!

Rank History for Asian students at Grayslake Central High School

Year	Avg Standard Score	Statewide Rank	Total # Ranked High Schools	IL State Percentile
2018	55.66	59^th	132	55.3%
2019	67.28	46^th	130	64.6%
2021	67.30	47^th	135	65.2%
2022	46.13	83^rd	141	41.1%
2023	60.05	56^th	134	58.2%
2024	44.19	85^th	137	38.0%

See the entire list of Best Illinois High Schools for Asian Students!

Rank History for African American students at Grayslake Central High School

Year	Avg Standard Score	Statewide Rank	Total # Ranked High Schools	IL State Percentile
2018	65.36	60^th	253	76.3%
2019	98.00	10^th	299	96.7%
2021	72.63	41^st	281	85.4%
2022	71.48	47^th	294	84.0%
2023	74.31	42^nd	301	86.0%
2024	86.08	24^th	299	92.0%

See the entire list of Best Illinois High Schools for African American Students!

Rank History for Hispanic students at Grayslake Central High School

Year	Avg Standard Score	Statewide Rank	Total # Ranked High Schools	IL State Percentile
2018	60.09	86^th	291	70.4%
2019	61.44	91^st	317	71.3%
2021	39.18	176^th	317	44.5%
2022	75.72	58^th	335	82.7%
2023	56.46	113^th	333	66.1%
2024	45.52	155^th	336	53.9%

See the entire list of Best Illinois High Schools for Hispanic Students!

Rank History for White students at Grayslake Central High School

Year	Avg Standard Score	Statewide Rank	Total # Ranked High Schools	IL State Percentile
2018	84.81	67^th	548	87.8%
2019	91.13	42^nd	552	92.4%
2021	92.89	48^th	553	91.3%
2022	86.72	59^th	560	89.5%
2023	79.67	87^th	557	84.4%
2024	80.84	91^st	554	83.6%

See the entire list of Best Illinois High Schools for White Students!

Data source: test scores: Illinois State Board of Education, rankings: SchoolDigger.com

As you review the school rankings data, please be aware that some of the information from certain demographics is missing. The reason for this omission is that the data has been redacted from the source data itself due to low population samples in these specific demographic groups.

Redacting data from low population samples is a necessary step to ensure the reliability and accuracy of the results, as small sample sizes may not be representative of the broader population. Additionally, this measure helps protect the privacy of individuals belonging to these demographic groups.

Data source: Illinois State Board of Education

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Enrollment information for Grayslake Central High School

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Year	White	African American	Asian	Hispanic	American Indian	Pacific Islander	Two or More Races	Not Specified	Total
1988	754	6	12	36	1	n/a	n/a	0	809
1989	686	5	13	28	n/a	n/a	n/a	0	732
1990	703	12	10	23	n/a	n/a	n/a	0	748
1991	710	9	9	29	0	n/a	n/a	0	757
1992	761	7	9	32	2	n/a	n/a	0	811
1993	792	4	10	31	4	n/a	n/a	0	841
1994	868	9	9	33	4	n/a	n/a	0	923
1995	1056	19	19	78	5	n/a	n/a	0	1177
1996	1056	19	19	78	5	n/a	n/a	0	1177
1997	1136	22	29	90	2	n/a	n/a	0	1279
1998	1233	23	36	106	5	n/a	n/a	0	1403
1999	1259	29	43	110	2	n/a	n/a	0	1443
2000	1370	33	59	109	1	n/a	n/a	0	1572
2001	1438	39	61	118	5	n/a	n/a	0	1661
2002	1620	56	86	169	9	n/a	n/a	0	1940
2003	1620	56	86	169	9	n/a	n/a	0	1940
2004	1690	53	95	211	8	n/a	n/a	0	2057
2005	1303	46	85	182	7	n/a	n/a	1	1624
2006	1359	46	116	209	7	n/a	n/a	12	1749
2007	1160	53	126	185	3	n/a	n/a	19	1546
2008	975	48	112	141	1	n/a	n/a	21	1298
2009	921	63	106	152	4	n/a	n/a	38	1284
2010	888	68	121	165	6	n/a	n/a	48	1296
2011	844	60	116	232	5	6	71	0	1334
2012	863	63	128	254	4	2	58	0	1372
2013	892	58	123	269	1	1	61	0	1405
2014	926	64	131	254	3	1	51	0	1430
2015	941	53	126	276	1	3	61	0	1461
2016	923	62	120	273	3	2	55	0	1438
2017	888	61	134	276	4	3	49	0	1415
2018	828	52	127	290	3	2	51	0	1353
2019	792	55	144	287	4	1	52	0	1335
2020	804	64	127	303	2	3	56	0	1359
2021	807	72	124	315	1	3	57	0	1379
2022	805	84	107	310	1	4	67	0	1378
2023	829	87	110	321	2	4	66	0	1419
2024	799	77	118	305	2	0	74	0	1375

Data source: National Center for Education Statistics, U.S. Dept of Education.

About Enrollment/Ethnicity

For more information about how the Department of Education defines ethnicity, see Defining Race and Ethnicity Data, National Center for Education Statistics

Students eligible for free or discounted lunch at Grayslake Central High School

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Year	# Students	Full-time Teachers	Student/Teacher ratio	% Free/Discounted Lunch
1988	809	47.2	17.1	n/a
1989	732	45.8	15.9	n/a
1990	748	44.7	16.7	n/a
1991	757	48.2	15.7	n/a
1992	811	50.3	16.1	n/a
1993	841	55.3	15.2	n/a
1994	923	59.0	15.6	n/a
1995	1177	70.9	16.6	n/a
1996	1177	70.9	16.6	n/a
1997	1279	77.7	16.5	n/a
1998	1403	80.0	17.5	n/a
1999	1443	89.5	16.1	n/a
2000	1572	97.7	16.1	n/a
2001	1661	95.2	17.4	n/a
2002	1940	103.2	18.8	0
2003	1940	103.2	18.8	0
2004	2057	124.4	16.5	0
2005	1624	106.4	15.3	0
2006	1749	106.6	16.4	0
2007	1546	90.0	17.2	0
2008	1298	77.0	16.9	0
2009	1284	91.0	14.1	0
2010	1296	94.0	13.7	0
2011	1334	93.0	14.3	0
2012	1372	95.5	14.3	12.9
2013	1405	149.1	9.4	12.2
2014	1430	86.4	16.5	13.1
2015	1461	93.0	15.7	11.9
2016	1438	91.0	15.8	11.1
2017	1415	93.6	15.1	11
2018	1353	93.3	14.5	10.6
2019	1335	94.1	14.1	10.7
2020	1359	95.0	14.2	10.8
2021	1379	n/a	n/a	n/a
2022	1378	99.8	13.8	12.1
2023	1419	102.8	13.7	n/a
2024	1375	104.0	13.2	n/a

Data source: National Center for Education Statistics, U.S. Dept of Education.

About Students eligible for discounted/free lunch:

The National School Lunch Program (NSLP) provides low-cost or free meals to students in U.S. public and nonprofit private schools based on household income. Those with incomes below 130% of the poverty line receive free lunch, while those between 130% and 185% qualify for reduced-price lunch. The percentage of students receiving free or reduced-price lunch serves as a marker for poverty, as it reflects the socioeconomic status of families in a given school or district. A higher FRPL rate typically indicates a higher concentration of low-income families, suggesting that the school or district may face additional challenges in providing adequate resources and support for student success.

Student/Teacher Ratio Grayslake Central High School

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Year	# Students	Full-time Teachers	Student/Teacher ratio	% Free/Discounted Lunch
1988	809	47.2	17.1	n/a
1989	732	45.8	15.9	n/a
1990	748	44.7	16.7	n/a
1991	757	48.2	15.7	n/a
1992	811	50.3	16.1	n/a
1993	841	55.3	15.2	n/a
1994	923	59.0	15.6	n/a
1995	1177	70.9	16.6	n/a
1996	1177	70.9	16.6	n/a
1997	1279	77.7	16.5	n/a
1998	1403	80.0	17.5	n/a
1999	1443	89.5	16.1	n/a
2000	1572	97.7	16.1	n/a
2001	1661	95.2	17.4	n/a
2002	1940	103.2	18.8	0
2003	1940	103.2	18.8	0
2004	2057	124.4	16.5	0
2005	1624	106.4	15.3	0
2006	1749	106.6	16.4	0
2007	1546	90.0	17.2	0
2008	1298	77.0	16.9	0
2009	1284	91.0	14.1	0
2010	1296	94.0	13.7	0
2011	1334	93.0	14.3	0
2012	1372	95.5	14.3	12.9
2013	1405	149.1	9.4	12.2
2014	1430	86.4	16.5	13.1
2015	1461	93.0	15.7	11.9
2016	1438	91.0	15.8	11.1
2017	1415	93.6	15.1	11
2018	1353	93.3	14.5	10.6
2019	1335	94.1	14.1	10.7
2020	1359	95.0	14.2	10.8
2021	1379	n/a	n/a	n/a
2022	1378	99.8	13.8	12.1
2023	1419	102.8	13.7	n/a
2024	1375	104.0	13.2	n/a

Data source: National Center for Education Statistics, U.S. Dept of Education.

About Student-Teacher Ratio

Student/teacher ratio is calculated by dividing the total number of students by the total number of full-time equivalent teachers. Please note that a smaller student/teacher ratio does not necessarily translate to smaller class size. In some instances, schools hire teachers part time, and some teachers are hired for specialized instruction with very small class sizes. These and other factors contribute to the student/teacher ratio. Note: For private schools, Student/teacher ratio may not include Pre-Kindergarten.

Immunization Rates