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Linn-Mar High School
School pathway
Test scores
ISASP 2024-25 . % ProficientWhat this means: On the ISASP, Iowa's statewide test, about 77 of every 100 students at this school read and write at grade level and about 73 of 100 do math at grade level. Across all Iowa schools, those numbers are about 74 and 71. Reading and writing scores are down about 3 points since 2023, while math scores are down about 1 points.
BeatsExpectations
Demographically-adjusted score · methodologyWhat this means: About 75% of students here test proficient in math and reading, compared with the roughly 80% typical for Iowa schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among Iowa's top nor bottom 10%.
7-year change
SY 2017-18 vs SY 2024-25About Linn-Mar High School
Located at 3111 N 10th St, in Marion, Iowa, Linn-Mar High School is a substantial high school that instructs 2,229 students (grades 9 through 12), overseen by Linn-Mar Comm School District. By comparison, Iowa's public schools average about 468 students each, so Linn-Mar High School sits 376% above that benchmark.
Within Linn-Mar Comm School District, which oversees 12 schools and 7,361 students, Linn-Mar High School is one campus in the system.
For racial and ethnic makeup, Linn-Mar High School records that 74% of the student body identifies as White. Beyond that, the school reports 7% Black, 6% Hispanic, 6% Asian, 6% multiracial. By comparison, Linn County as a whole is about 84% White, so the school skews meaningfully less White than its surroundings.
Looking at school resources, The school lists 130 full-time-equivalent teachers, for a student-teacher ratio near 17.1:1. That tracks the state average closely. About 23% of enrolled students meet the income threshold for free or reduced-price lunch, a commonly cited indicator of low-income enrollment. That share is noticeably below Linn County's rate of about 40%.
With demographic context factored in, Linn-Mar High School performs roughly as the BeatsExpectations model predicts for a school with this FRL share. The predicted value is around 80.4%, the actual is 74.9%, a residual of -5.5 points.
Zooming out to the county, ACS estimates for Linn County put median household earnings sit near $77,649, roughly 35% of adults have completed at least a four-year degree, and roughly 6% of residents live below the federal poverty line. Across Linn County's 83 public schools (combined enrollment of about 36,480 students), Linn-Mar High School is one campus in the mix.
Nearest neighbor: Indian Creek Elementary School, around 0.3 miles off. 8 of the 8 nearest public schools sit inside a five-mile radius. On composite proficiency, Linn-Mar High School comes 5th of 8 in the immediate cluster, below the nearby-schools average of 77.3%.
The school occupies a suburban site.
Over the past 7-year window. Over the past 7-year window, the student count climbed 4%: 2,141 students in 2018 compared to 2,229 in 2025. The White share of enrollment edged down from 82% to 74% over that span.
In the discussion threads here, members of the Linn-Mar High School community share and discuss open house dates, ride-share offers, and field-trip permission slips. Contributors range from current parents to recent graduates and teachers.
Linn County at a glance
View full county profileQuick facts
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