Developmental Pre-School

Located at 400 N. Boundary, in Mattawa, Washington, Developmental Pre-School is an one-room-style elementary campus that serves 10 students (grade pre-K), operated by Wahluke School District. By comparison, Washington's public schools average about 380 students each, so Developmental Pre-School sits 97% below that benchmark.

Across the 8 schools in Wahluke School District (2,455 students total), Developmental Pre-School accounts for its share of the district's footprint.

In terms of who attends, Developmental Pre-School lists that 100% of students identify as Hispanic, making the school strongly Hispanic-majority. By comparison, Grant County as a whole is about 44% Hispanic, so the school skews meaningfully more Hispanic than its surroundings.

Looking at school resources, About 70% of enrolled students meet the income threshold for free or reduced-price lunch, which schools and policymakers use as a rough income-mix signal.

In the surrounding community, community-level numbers for Grant County indicate the typical household earns roughly $73,267 per year, roughly 18% of adults have completed at least a four-year degree, and census figures put the poverty rate at about 12%. Developmental Pre-School is one of 61 public schools in Grant County (combined enrollment of about 20,494 students).

The closest other public school is Mattawa Elementary Pre-School, roughly 0.0 miles away. Counting just inside five miles, 7 other public schools cluster around Developmental Pre-School.

The campus sits in an outlying setting.

Over the past 7-year window. Over the past 7-year window, the student count ticked up 11%: 9 students in 2018 compared to 10 in 2025.

On this page, the feed for Developmental Pre-School typically covers open house dates, ride-share offers, and field-trip permission slips. Posting is open to anyone connected to the school.