MARK TWAIN SR. HIGH

Located at 21622 HWY 19, in CENTER, Missouri, MARK TWAIN SR. HIGH is a compact four-year high school that works with 251 students (grades 9 through 12), part of RALLS CO. R-II. Compared to the state average of about 501 students per school, that is 50% leaner than typical.

MARK TWAIN SR. HIGH is one of 3 schools operated by RALLS CO. R-II, a district that serves 800 students overall.

On demographics, MARK TWAIN SR. HIGH records that the student body is overwhelmingly White (94%). That mix tracks the wider county fairly closely.

Looking at the economic backdrop, MARK TWAIN SR. HIGH shows 21 full-time-equivalent teachers, putting the student-to-teacher ratio at about 12.0:1. The state averages about 12.2:1, putting this campus right in line with peers. Around 29% of the student body qualifies for free or reduced-price meals, which schools and policymakers use as a rough income-mix signal.

Adjusting for the school's free-and-reduced-lunch share, On a poverty-adjusted basis, MARK TWAIN SR. HIGH sits in the bottom 10% statewide. Predicted proficiency from the FRL regression is roughly 50.7%; actual is 20.9%, a gap of -29.9 points.

In the area at large, census data for Ralls County shows median household income runs about $65,388, about 17% of the adult population holds a bachelor's degree or above, and the poverty rate sits near 9%. MARK TWAIN SR. HIGH is one of 3 public schools in Ralls County (combined enrollment of about 800 students).

MARK TWAIN JR. HIGH is the nearest neighboring public school, about 0.0 miles from this campus. Within five miles, there are 2 other public schools. On composite proficiency, MARK TWAIN SR. HIGH comes 9th of 9 in the immediate cluster, beneath the nearby-schools average of 52.0%.

The school occupies an outlying site.

Looking at the recent track record. MARK TWAIN SR. HIGH's enrollment has ticked up 9% since 2018, when it stood at 231 (now 251). Class-load math has narrowed: from 13.0:1 in 2018 to 12.0:1 in 2025.

On allk12, the page collects discussion, questions, and updates around sports schedules, lunch menu changes, and school spirit week. Contributors range from current parents to recent graduates and teachers.