allk12 · Rankings · Highest ratio · Illinois · McHenry County · High schools

The public high schools with the highest student-to-teacher ratios in McHenry County, Illinois

This ranking covers the public high schools with the highest student-to-teacher ratios in McHenry County, Illinois, drawn from 13 qualifying public high schools. Cary-Grove Community High School leads the list at 17.7:1, against a median of 15.4:1 across the ranked schools.

The table below is sortable and filterable, and the full list downloads as a CSV. Figures come from federal NCES enrollment data and, where applicable, state assessment results for 2024-25.

Schools ranked

McHenry County, Illinois

Top Students/teacher

17.7:1

Median Students/teacher

15.4:1

HIGHEST RATIO · MCHENRY COUNTY, ILLINOIS

#	School	City	District	Level	Students	Ratio
1	Cary-Grove Community High School	Cary, IL	CHSD 155	High	1,348	17.7:1
2	Crystal Lake Central High School	Crystal Lake, IL	CHSD 155	High	1,443	16.9:1
3	Crystal Lake South High School	Crystal Lake, IL	CHSD 155	High	1,279	16.5:1
4	Prairie Ridge High School	Crystal Lake, IL	CHSD 155	High	1,133	16.4:1
5	Huntley High School	Huntley, IL	Huntley Comm Sch Dist 158	High	2,804	15.7:1
6	Woodstock High School	Woodstock, IL	Woodstock CUSD 200	High	988	15.5:1
7	McHenry Community High School	Mchenry, IL	McHenry CHSD 156	High	2,214	15.4:1
8	Woodstock North High School	Woodstock, IL	Woodstock CUSD 200	High	915	14.9:1
9	Harry D Jacobs High School	Algonquin, IL	CUSD 300	High	2,056	14.6:1
10	Marengo High School	Marengo, IL	Marengo CHSD 154	High	685	14.5:1
11	Johnsburg High School	Johnsburg, IL	Johnsburg CUSD 12	High	502	13.2:1
12	Richmond-Burton High School	Richmond, IL	Richmond-Burton CHSD 157	High	521	12.1:1
13	Harvard High School	Harvard, IL	Harvard CUSD 50	High	815	10.4:1

Page 1 of 1 · top 13 of 13 ranked. NCES + state assessment data, 2024-25.↓ Download full CSV

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DATA NOTICE

allk12 is independent and not affiliated with, endorsed by, or sponsored by NCES, the US Census Bureau, any state education agency or assessment program, or any other government agency. Source data is compiled from public records and provided "as is," without warranty of accuracy or completeness. You rely on it, and any analysis derived from it, at your own risk. See the full disclaimer.