St. Croix Preparatory Academy Upper

St. Croix Preparatory Academy Upper operates as an average-sized high school in STILLWATER, Minnesota, operated by ST. CROIX PREPARATORY ACADEMY. Current enrollment sits at 391 students spanning grades 9 through 12.

Within ST. CROIX PREPARATORY ACADEMY, which oversees 3 schools and 1,212 students, St. Croix Preparatory Academy Upper is one campus in the system.

For racial and ethnic makeup, St. Croix Preparatory Academy Upper records that 74% of the student body identifies as White. Other groups include 11% Asian, 7% Hispanic, 5% multiracial, 3% Black. Compared to Washington County overall, the school's racial mix sits in roughly the same range.

Looking at school resources, Staff filings list 30 full-time-equivalent teachers, which works out to roughly 12.9:1 students per teacher. The state averages around 16.3:1, so this campus is tighter than the state norm typical. About 9% of enrolled students meet the income threshold for free or reduced-price lunch, often used as a Title I proxy. Set against Washington County (around 26%), the school's rate is noticeably below typical.

On a residual basis (actual vs predicted given the student mix), St. Croix Preparatory Academy Upper ranks in the top 10% of Minnesota public schools. The BeatsExpectations model, a per-state regression of composite proficiency on FRL share, predicts schools with this student profile to land around 60.1%; St. Croix Preparatory Academy Upper posts 75.5%, +15.4 points above that line.

Zooming out to the county, the surrounding county (Washington County) records that median household earnings sit near $115,345, 49% of adults hold a bachelor's degree or higher, and roughly 4% of residents live below the federal poverty line. St. Croix Preparatory Academy Upper is one of 103 public schools in Washington County (combined enrollment of about 46,313 students).

The closest other public school is St. Croix Prep Academy Middle, roughly 0.0 miles away. 8 of the 8 nearest public schools sit inside a five-mile radius. Among the 4 schools in that immediate cluster with test data (this one included), St. Croix Preparatory Academy Upper ranks 2nd on composite proficiency, above the local average of 66.1%.

The campus sits in a town-based setting. St. Croix Preparatory Academy Upper is a charter school, which puts it inside the public-school system but outside the standard district-managed model.

Five-year trend. Looking back 7 years, enrollment at St. Croix Preparatory Academy Upper has edged up 13%, going from 347 students in 2018 to 391 in 2025. Over the same period, the White share decreased from 89% to 74%.

On allk12, the feed for St. Croix Preparatory Academy Upper typically covers open house dates, ride-share offers, and field-trip permission slips. Contributors range from current parents to recent graduates and teachers.