allk12 · Rankings · Lowest proficiency · Illinois · McHenry County · High schools

The lowest-performing public high schools by test proficiency in McHenry County, Illinois

13 public high schools in McHenry County, Illinois appear in this ranking of the lowest-performing public high schools by test proficiency, ranked by the lowest composite state-assessment proficiency. Harvard High School leads the list at 19.7%, against a median of 45.3% 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

Best % Proficient

19.7%

Median % Proficient

45.3%

LOWEST PROFICIENCY · MCHENRY COUNTY, ILLINOIS

#	School	City	District	Level	% FRL	Students	% Proficient
1	Harvard High School	Harvard, IL	Harvard CUSD 50	High	44.5%	815	19.7%
2	McHenry Community High School	Mchenry, IL	McHenry CHSD 156	High	37.7%	2,214	39.3%
3	Woodstock North High School	Woodstock, IL	Woodstock CUSD 200	High	40.3%	915	42.8%
4	Harry D Jacobs High School	Algonquin, IL	CUSD 300	High	40.3%	2,056	44.0%
5	Johnsburg High School	Johnsburg, IL	Johnsburg CUSD 12	High	32.1%	502	44.3%
6	Marengo High School	Marengo, IL	Marengo CHSD 154	High	31.7%	685	44.8%
7	Crystal Lake Central High School	Crystal Lake, IL	CHSD 155	High	35.3%	1,443	45.3%
8	Alden-Hebron High School	Hebron, IL	Alden Hebron SD 19	High	44.6%	112	46.5%
9	Crystal Lake South High School	Crystal Lake, IL	CHSD 155	High	32.1%	1,279	46.5%
10	Woodstock High School	Woodstock, IL	Woodstock CUSD 200	High	44.5%	988	51.7%
11	Huntley High School	Huntley, IL	Huntley Comm Sch Dist 158	High	19.3%	2,804	57.8%
12	Cary-Grove Community High School	Cary, IL	CHSD 155	High	25.6%	1,348	58.8%
13	Prairie Ridge High School	Crystal Lake, IL	CHSD 155	High	22.4%	1,133	60.6%

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.