Summary
Henry Zarrow International School is a 491-student elementary school serving PK–5 in Tulsa, Oklahoma. In 2025–2026, its all-grade proficiency was 50% in English language arts, 58% in math and 57% in science. Its clearest distinction is that it led the nearby same-district PK–5 schools in all three subjects, while also scoring above the state and Tulsa district in each.
Math is the school’s strongest relative result, while third-grade ELA and fifth-grade math are softer spots. Compared with the nearby same-district schools’ averages—22% in ELA, 25% in math and 30% in science—Henry Zarrow was ahead by 28, 33 and 27 percentage points, respectively. Its results also topped the state’s 26% ELA, 25% math and 30% science, and the district’s 17%, 15% and 20%. Among nearby schools, Carnegie Elementary School had the next-highest ELA and math results, at 43% and 49%; Lanier Elementary School led the nearby group in science at 54%. By grade, Henry Zarrow’s third-grade ELA was 40%, below Carnegie’s 44%, and its fifth-grade math was 50%, below Carnegie’s 61% but above the other nearby same-district schools.
Results improved in all three subjects from 2024–2025 to 2025–2026: ELA rose from 42% to 50%, math from 51% to 58%, and science from 34% to 57%. The school’s SchoolDigger ranking was 31 of 626 statewide, at the 95th percentile with 5 stars; Carnegie was next among nearby schools, at the 89th percentile with 4 stars. Context measures add perspective, not explanations: in 2024–2025, the student-teacher ratio was 18.1, above the roughly 16.4 average for nearby same-district schools, and 47% of students were free/reduced lunch eligible. Chronic absenteeism was low at 3% in 2025–2026, tied with Dove School Of Discovery Elementary School Tulsa for the lowest rate among nearby schools.
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