Seneca High School
🇺🇸 Official data · 2025Seneca, Illinois 61360 · Seneca Twp HSD 160
#133 of 691 high schools in Illinois
#7968 of 16,910 nationally
About Seneca High School
Seneca High School is a public high located in Seneca, in the Seneca Twp HSD 160 school district of Illinois, United States. It caters for Grades 9–12. In 2025 it enrolled 378 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 51.6 out of 100, placing it in the top 50% of high schools in United States and 133rd of 691 ranked high schools in Illinois. Its strongest component is students per teacher (88th percentile), and its weakest is reading proficiency (25th percentile).
Other published figures: enrollment 378.
There are 3 schools in Seneca; Seneca High School ranks 3rd of 3 scored schools there.
Success Index (US) breakdown
Each component is a percentile against high schools across United States.
- Math proficiency (30%)32%
- Reading proficiency (30%)37%
- Community advantage (fewer free/reduced-price lunch) (25%)31.5%
- Students per teacher (15%)9.9
The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for Seneca High School by the official sources.
- Enrollment
- 378
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 31.5%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 9.9
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 37%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 32%
- Share of tested students proficient or above (all students, all grades).
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Schools near Seneca High School
Closest schools by straight-line distance, with their Success Index (US).
Seneca Elem School South Campus
Seneca · Public middle · Grades 5–8
209 students · 855 m away
Seneca Grade School North Campus
Seneca · Public elementary · Grades PK–4
256 students · 855 m away
Marseilles Elementary School
Marseilles · Public elementary · Grades PK–8
528 students · 7.9 km away
Milton Pope Elem School
Marseilles · Public elementary · Grades K–8
195 students · 9.5 km away
Nettle Creek Elem School
Morris · Public elementary · Grades PK–8
77 students · 13 km away
White Oak Elementary
Morris · Public elementary · Grades PK–5
722 students · 14 km away
Similar schools
Public high schools in Illinois with a comparable Enrollment.
Paxton-Buckley-Loda High School
Paxton · Public high · Grades 9–12
378 students
Litchfield Senior High School
Litchfield · Public high · Grades 9–12
382 students
Farmington Central High Sch
Farmington · Public high · Grades 9–12
383 students
Alcott College Prep
Chicago · Public high · Grades 9–12
373 students
Phoenix Military Academy HS
Chicago · Public high · Grades 9–12
372 students
Staunton High School
Staunton · Public high · Grades 9–12
384 students
Frequently asked questions
Is Seneca High School a good school?
Seneca High School has a Success Index (US) of 51.6 out of 100 (Top 50% of high schools in United States) and ranks #133 of 691 in Illinois. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does Seneca High School rank in Illinois?
Seneca High School ranks #133 of 691 high schools in Illinois and #7968 of 16,910 nationally on the Success Index (US) (2025 data).
How many students attend Seneca High School?
Seneca High School had 378 students in 2025.
Is Seneca High School a elementary school or a high school?
Seneca High School is classified as a high covering Grades 9–12. It is a public school.
What other schools are near Seneca High School?
There are 6 schools within 15 km of Seneca High School; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.