Summary:
St Marys City has exactly one public high school — St Marys Memorial High School — serving grades 9–12 with 669 students (roughly 167 per grade) in the St Marys City district. Because the district contains only this one high school, most district figures are simply the school's figures repeated, with one notable exception in Algebra I described below.
Where the school shines: its graduation rate is 99.3%, identical to the district's and effectively every student in a class of about 167. Humanities and science produce the strongest test results — American History at 74.6% proficient (state: 73.2%), English II at 65.3% (state: 62.7%), and Biology at 66.7%, within a point of the state's 67.0%. Biology also posted the largest one-year gain of any subject, up 10.4 points, and English II rose 4.7 points.
Where to look closer: mathematics is the clear weak spot. Geometry is the lowest of the six tested subjects at 42.2% proficient — 1.1 points below the state and down 10.2 points from 52.4% a year earlier. Algebra I sits at 54.1%, 7.5 points below the state (61.6%) and 8.4 points below the district's 62.5% — the only subject where school and district diverge, likely because the district's Algebra I pool includes students testing before grade 9. Chronic absenteeism is 15.7%, well above the district's 11.4%. The school ranks 501 of 795 (37th percentile, 2 stars) while the district ranks 388 of 773 (50th percentile, 3 stars), and the school's percentile has slipped 45 → 44 → 37 over three years even though its six-subject average held flat at 62.1 while the state rose. Two data gaps matter: free/reduced-lunch is blank (unknown, not zero), and per-student spending ($8,845) dates to 2018-2019.
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