Timber Lake High School - 01

Located at 500 Main St, in Timber Lake, South Dakota, Timber Lake High School - 01 is a tight-knit secondary school that caters to 117 students (grades 9 through 12), operated by Timber Lake School District 20-3. That puts it 48% below the typical public school in South Dakota, which averages around 225 students.

Timber Lake School District 20-3 comprises 3 schools with combined enrollment of 372 students; Timber Lake High School - 01 is among them.

For racial and ethnic makeup, Timber Lake High School - 01 logs that 50% of students identify as White, with the remaining enrollment distributed across several groups. Other groups include 47% Native American. That is considerably more White than the county at large, where the share is closer to 21%.

On the income-and-resources front, On paper, Timber Lake High School - 01 has 9 full-time-equivalent teachers, translating to a class-load average of around 12.9:1. That figure is tighter than the state norm's 20.6:1 average. An estimated 37% of students are eligible for free or reduced-price lunch, a number frequently used as a low-income enrollment indicator. By comparison, Dewey County runs at roughly 84%, so the school's eligibility rate is below the surrounding baseline.

Across the wider county, the surrounding county (Dewey County) reports that median household income runs about $54,104, roughly 19% of adults have completed at least a four-year degree, and the poverty rate sits near 29%. Timber Lake High School - 01 is one of 10 public schools in Dewey County (combined enrollment of about 1,466 students).

Timber Lake Elementary - 02 is the nearest neighboring public school, about 0.0 miles from this campus. 2 of the 8 nearest public schools sit inside a five-mile radius.

The campus sits in a small-town setting.

Trend over the last 7 years. Over the past 7-year window, the student count ticked up 21%: 97 students in 2018 compared to 117 in 2025. Over the same period, the White share increased from 35% to 50%. The student-to-teacher ratio loosened from 8.7:1 in 2018 to 12.9:1 today.

On allk12, the feed for Timber Lake High School - 01 typically covers school events, parent volunteer needs, and clubs. Members of the school community can share what they know.