Illini Central High School

Summary:

Illini Central High School is a public high school located in Mason City, Illinois, serving grades 9-12 with a total enrollment of 185 students. The school is part of the Illini Central CUSD 189 district, which is ranked 647 out of 813 districts in Illinois and has a 1-star rating from SchoolDigger.

Illini Central High School has consistently underperformed compared to the state and nearby schools on standardized tests, with only 7% of 11th-grade students proficient or better in SAT Mathematics and 16.3% proficient or better in SAT English Language Arts, compared to state averages of 26.1% and 31.1%, respectively. The school has also struggled with relatively low four-year graduation rates, ranging from 83% to 89.7%, compared to higher rates at nearby schools like Williamsville High School (96%) and Lincoln Community High School (91.3%). Additionally, Illini Central High School has had high chronic absenteeism rates, reaching as high as 42.6% in the 2020-2021 school year, significantly above the state average.

Illini Central High School's performance has been inconsistent over the years, with the school's statewide ranking fluctuating between 218 and 550 out of Illinois high schools. The school's performance data also shows significant differences in the rankings of male and female students, with male students ranking 600 out of 668 Illinois high schools and female students ranking 383 out of 664. Furthermore, the school's performance for special education and low-income students is particularly concerning, with the school ranking 377 out of 482 Illinois high schools for special education students and 539 out of 639 for low-income students.


Detail:

Public 9-12

 208 N West Ave
       Mason City, IL  62664-1066


(217) 482-3252

District: Illini Central CUSD 189

SchoolDigger Rank:
496th of 697 Illinois High Schools

Per Pupil Expenditures:  $18,338 Help


Feeder schools for Illini Central High School:

Elementary:    Illini Central Grade School
Middle:    Illini Central Middle School

Student/teacher ratio:  9.3 Help
Number of students:  185

Racial breakdown:

White:
92.4%
Hispanic:
4.3%
Two or more races:
2.2%
more

Free/discounted lunch recipients:  43.2% Help


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Performance Trends
Help
Compare Details Illini Central High School ranks worse than 71.2% of high schools in Illinois. (See more...)
Help
Compare Details In 2024 the calculated Average Standard Score was 27.1. (See more...)
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The Adjusted Cohort Graduation Rate (ACGR) measures the percentage of Illini Central High School freshmen who graduate within four years, adjusting for students who transfer in or out.
Help
The high school dropout rate measures the percentage of students who do not complete their high school education.
Help
Chronic absenteeism in a high 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.
Finance
Help
Compare Details The average total spent per student at Illini Central High School is $18,338.
Schooldigger 2024 Rankings:

Illini Central High School:

SchoolDigger ranks Illini Central High School 496th of 697 Illinois public high schools. (See Illini Central High School in the ranking list.)

High School Test Score Ratings by Student Subgroup:


Special Education students:
Low Socio Economic Status students:
Female students:
Male students:
White students:


Illini Central CUSD 189:

SchoolDigger ranks Illini Central CUSD 189 647th of 813 Illinois school districts. (See district ranking list.)


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Rank History for Illini Central High School

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Compare

Rank History for all students at Illini Central High School

Year Avg Standard Score Statewide Rank Total # Ranked High Schools IL State Percentile SchoolDigger Rating
2003 57.35 282nd 586 51.9%
2004 19.07 503rd 592 15.0%
2005 36.58 448th 590 24.1%
2006 43.93 392nd 596 34.2%
2007 60.02 267th 612 56.4%
2008 37.85 449th 624 28.0%
2009 33.37 470th 632 25.6%
2010 22.89 517th 643 19.6%
2011 37.54 457th 655 30.2%
2012 46.84 401st 665 39.7%
2013 47.87 390th 670 41.8%
2014 36.76 457th 670 31.8%
2015 17.63 532nd 614 13.4%
2017 29.11 479th 642 25.4%
2018 22.09 524th 647 19.0%
2019 27.02 521st 701 25.7%
2021 20.78 550th 688 20.1%
2022 52.27 324th 699 53.6%
2023 63.39 218th 699 68.8%
2024 27.10 496th 697 28.8%
See the entire list of Illinois High School Rankings!

Rank History for Special Education students at Illini Central High School

Year Avg Standard Score Statewide Rank Total # Ranked High Schools IL State Percentile SchoolDigger Rating
2018 27.23 248th 374 33.7%
2023 47.71 177th 476 62.8%
2024 20.75 377th 482 21.8%
See the entire list of Best Illinois High Schools for Special Education Students!

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

Year Avg Standard Score Statewide Rank Total # Ranked High Schools IL State Percentile SchoolDigger Rating
2018 34.09 414th 585 29.2%
2019 39.05 390th 639 39.0%
2021 12.21 580th 611 5.1%
2022 24.99 492nd 626 21.4%
2023 49.03 297th 644 53.9%
2024 19.11 539th 639 15.6%
See the entire list of Best Illinois High Schools for Low Socio Economic Status Students!

Rank History for Female students at Illini Central High School

Year Avg Standard Score Statewide Rank Total # Ranked High Schools IL State Percentile SchoolDigger Rating
2018 29.22 459th 620 26.0%
2019 33.93 443rd 665 33.4%
2021 36.56 388th 639 39.3%
2022 36.29 425th 658 35.4%
2023 57.58 255th 656 61.1%
2024 38.66 383rd 664 42.3%
See the entire list of Best Illinois High Schools for Female Students!

Rank History for Male students at Illini Central High School

Year Avg Standard Score Statewide Rank Total # Ranked High Schools IL State Percentile SchoolDigger Rating
2018 13.67 539th 619 12.9%
2019 20.91 542nd 675 19.7%
2021 8.58 626th 653 4.1%
2022 67.36 174th 664 73.8%
2023 66.21 177th 668 73.5%
2024 13.23 600th 668 10.2%
See the entire list of Best Illinois High Schools for Male Students!

Rank History for White students at Illini Central High School

Year Avg Standard Score Statewide Rank Total # Ranked High Schools IL State Percentile SchoolDigger Rating
2018 12.62 507th 548 7.5%
2019 15.02 509th 552 7.8%
2021 11.86 523rd 553 5.4%
2022 34.38 371st 560 33.8%
2023 50.50 242nd 557 56.6%
2024 16.57 491st 554 11.4%
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.

Illini Central High School Test Scores
Tests: 
  
Grades: 
  
Years: 
  
Group by: 
District Scores:
State Scores:    
  
Subgroup: 




Data source: Illinois State Board of Education

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Enrollment information for Illini Central High School

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Year White African American Asian Hispanic American Indian Pacific Islander Two or More Races Not Specified Total
1990 264 n/a 1 1 n/a n/a n/a 0 266
1991 271 0 0 2 0 n/a n/a 0 273
1992 285 0 0 1 0 n/a n/a 0 286
1993 289 0 1 1 0 n/a n/a 0 291
1994 289 0 0 1 0 n/a n/a 0 290
1995 284 0 0 2 0 n/a n/a 0 286
1996 284 0 0 2 0 n/a n/a 0 286
1997 290 2 0 1 0 n/a n/a 0 293
1998 302 2 0 1 0 n/a n/a 0 305
1999 291 0 0 0 0 n/a n/a 0 291
2000 306 0 0 3 0 n/a n/a 0 309
2001 305 0 1 3 0 n/a n/a 0 309
2002 284 0 2 0 0 n/a n/a 0 286
2003 284 0 2 0 0 n/a n/a 0 286
2004 295 0 1 0 0 n/a n/a 0 296
2005 284 0 2 2 0 n/a n/a 0 288
2006 266 0 1 5 0 n/a n/a 1 273
2007 283 0 0 4 0 n/a n/a 3 290
2008 283 0 0 3 0 n/a n/a 6 292
2009 265 0 0 4 0 n/a n/a 5 274
2010 260 0 0 2 0 n/a n/a 6 268
2011 258 4 0 4 0 1 0 0 267
2012 244 2 0 6 0 1 1 0 254
2013 236 1 0 3 0 0 3 0 243
2014 244 0 0 2 0 0 3 0 249
2015 243 0 0 2 0 0 5 0 250
2016 229 0 0 2 1 0 6 0 238
2017 208 0 0 1 1 0 10 0 220
2018 183 0 0 3 1 0 6 0 193
2019 166 0 0 4 1 0 8 0 179
2020 168 0 0 6 0 0 6 0 180
2021 180 0 1 6 0 0 6 0 193
2022 171 1 1 8 0 0 7 0 188
2023 171 1 1 8 0 0 4 0 185

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 Illini Central High School

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Compare
Year # Students Full-time Teachers Student/Teacher ratio % Free/Discounted Lunch
1990 266 26.0 10.2 n/a
1991 273 24.0 11.3 n/a
1992 286 23.0 12.4 n/a
1993 291 22.0 13.2 n/a
1994 290 21.4 13.6 n/a
1995 286 21.3 13.4 n/a
1996 286 21.3 13.4 n/a
1997 293 21.9 13.4 n/a
1998 305 22.0 13.9 n/a
1999 291 23.0 12.7 n/a
2000 309 22.0 14.0 n/a
2001 309 22.3 13.9 n/a
2002 286 22.0 13.0 24.1
2003 286 22.0 13.0 24.1
2004 296 20.5 14.4 26
2005 288 21.9 13.2 24.7
2006 273 21.5 12.7 21.3
2007 290 20.0 14.5 27.5
2008 292 19.0 15.4 26.9
2009 274 20.9 13.1 28.3
2010 268 20.9 12.7 36.3
2011 267 20.5 12.9 34.1
2012 254 21.6 11.7 32.3
2013 243 22.8 10.6 34.6
2014 249 24.4 10.1 50.6
2015 250 24.0 10.4 48.4
2016 238 22.0 10.8 45.4
2017 220 21.3 10.3 51.4
2018 193 19.3 9.9 45.6
2019 179 18.2 9.7 49.2
2020 180 17.4 10.2 43.3
2021 193 n/a n/a n/a
2022 188 17.8 10.5 43.6
2023 185 19.8 9.3 43.2

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 Illini Central High School

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Compare
Year # Students Full-time Teachers Student/Teacher ratio % Free/Discounted Lunch
1990 266 26.0 10.2 n/a
1991 273 24.0 11.3 n/a
1992 286 23.0 12.4 n/a
1993 291 22.0 13.2 n/a
1994 290 21.4 13.6 n/a
1995 286 21.3 13.4 n/a
1996 286 21.3 13.4 n/a
1997 293 21.9 13.4 n/a
1998 305 22.0 13.9 n/a
1999 291 23.0 12.7 n/a
2000 309 22.0 14.0 n/a
2001 309 22.3 13.9 n/a
2002 286 22.0 13.0 24.1
2003 286 22.0 13.0 24.1
2004 296 20.5 14.4 26
2005 288 21.9 13.2 24.7
2006 273 21.5 12.7 21.3
2007 290 20.0 14.5 27.5
2008 292 19.0 15.4 26.9
2009 274 20.9 13.1 28.3
2010 268 20.9 12.7 36.3
2011 267 20.5 12.9 34.1
2012 254 21.6 11.7 32.3
2013 243 22.8 10.6 34.6
2014 249 24.4 10.1 50.6
2015 250 24.0 10.4 48.4
2016 238 22.0 10.8 45.4
2017 220 21.3 10.3 51.4
2018 193 19.3 9.9 45.6
2019 179 18.2 9.7 49.2
2020 180 17.4 10.2 43.3
2021 193 n/a n/a n/a
2022 188 17.8 10.5 43.6
2023 185 19.8 9.3 43.2

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

Illini Central High School

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Compare
YearPolioMeaslesMumpsRubellaHepatitis BVaricellaMeningococcalDTP
2016100.0%100.0%100.0%100.0%100.0%100.0%21.2%
2017100.0%100.0%100.0%100.0%100.0%99.6%23.1%100.0%
2018100.0%100.0%100.0%100.0%100.0%100.0%28.5%100.0%
201997.8%97.8%97.8%97.8%97.8%97.8%50.3%97.8%
202199.5%99.5%99.5%99.5%99.5%99.5%97.4%99.5%
202299.5%99.5%99.5%99.5%99.5%99.5%99.5%99.5%
2023100.0%100.0%100.0%100.0%100.0%100.0%98.9%100.0%
202498.3%98.3%98.3%98.3%98.3%98.3%96.7%98.3%

Data source: Illinois State Board of Education
Finances

Per Pupil Expenditures for Illini Central High School

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YearExpenditures from Federal FundsExpenditures from State and Local FundsTotal Expenditures Per Pupil (All Funds)
2019 $811 (6.2%) $12,333 (93.8%) $13,145
2020 $449 (3.3%) $13,241 (96.7%) $13,690
2021 $929 (6.9%) $12,555 (93.1%) $13,484
2022 $929 (6.9%) $12,555 (93.1%) $13,484
2023 $1,231 (7.0%) $16,472 (93.0%) $17,703
2024 $1,104 (6.0%) $17,234 (94.0%) $18,338

Data source: Illinois Department of Education
Pre and Post Pandemic Data

Impact of COVID-19 on Illini Central High School

The coronavirus has had a profound impact on education in America. Learning shifted online overnight, attendance numbers dwindled, and enrollment decreased. SchoolDigger.com is making it easier for you to better assess how COVID-19 has impacted your school. Through the collection of pre-pandemic (2019) and current data, SchoolDigger.com is sharing test scores, enrollment numbers and school demographics from schools across the country – and we make it easy to see how impacted schools compare locally and statewide.

Rankings

Rank
Pre-pandemic (2018-2019)
Rank
Post pandemic (2022-2023)
Change (%)
Ranks 521st of 701 High schoolsRanks 218th of 699 High schools
 43.1%

Test Scores

% proficient
Pre-pandemic (2018-2019)
% proficient
Post pandemic (2022-2023)
Change (%)
11th Grade Mathematics (Illini Central High School)8.319.1
 10.8%
   11th Grade Mathematics (Illini Central CUSD 189)8.319.1
 10.8%
   11th Grade Mathematics (Illinois)34.826.7
 8.1%
11th Grade English Language Arts (Illini Central High School)2527.6
 2.6%
   11th Grade English Language Arts (Illini Central CUSD 189)2527.6
 2.6%
   11th Grade English Language Arts (Illinois)36.731.6
 5.1%
End of Course Science (Illini Central High School)17.168.1
 51%
   End of Course Science (Illini Central CUSD 189)17.168.1
 51%
   End of Course Science (Illinois)36.452.2
 15.8%

Student Body

Number of students
Pre-pandemic (2018-2019)
Number of students
Post pandemic (2022-2023)
Change (%)
Total Students179185
 3.4%
African American01
American Indian10
 100%
Asian01
Hispanic48
 100%
Pacific Islander00
White166171
 3%
Two or More Races84
 50%
% Free/Discounted Lunch Recipients49.2%43.2%
 5.9%


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Frequently Asked Questions about Illini Central High School

Illini Central High School ranks 496th of 697 Illinois high schools. SchoolDigger rates this school 1 star out of 5.

In the 2022-23 school year, 185 students attended Illini Central High School.

Illini Central High School is fed by the following schools:

Elementary : Illini Central Grade School
Middle : Illini Central Middle School

Students at Illini Central High School are 92% White, 4% Hispanic, 2% Two or more races.


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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.





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