Summary:
ZIP code 61114 has three schools in Rockford School District 205: two K–5 elementary schools and one high school serving grades 9–12. In 2025–2026, the elementary schools averaged 46% proficiency in ELA and 29% in math, compared with state results of 56% and 40%. At Guilford High School, 11th-grade ACT proficiency was 32% in ELA, 16% in math, and 34% in science, all below state results. The clearest shared concern is low math proficiency: the elementary average was 10 points below the state, and Guilford’s largest gap was 24 points below the state.
Spring Creek Elementary School stands out among the elementary schools in ELA and science: it scored 47% in all-grades ELA versus 45% at Clifford P Carlson Elementary School, and 44% in fifth-grade science versus 36% at Carlson. Carlson led slightly in all-grades math, at 30% versus Spring Creek’s 29%. Guilford’s strongest relative ACT subject was science, where it was 14 points below the state; its gaps were 18 points in ELA and 24 in math. It is the only high school in this list, so there is no same-level school comparison.
Elementary results improved in ELA and science but not math from 2024–2025 to 2025–2026: the two-school ELA average rose 9 points and the fifth-grade science average rose 21 points, while the math average slipped 1 point as the state math result rose 1 point. Guilford’s ACT state gaps widened in all three subjects, most notably in math, from 18 to 24 points. SchoolDigger’s 2025–2026 rankings placed Guilford at the 19th percentile, Carlson at the 25th, and Spring Creek at the 30th; each school’s percentile was lower than in 2023–2024. Other differences may help families compare the elementary schools: chronic absenteeism was 25% at Spring Creek and 35% at Carlson, while their student–teacher ratios were 15.6 and 17.8. Their free/reduced lunch eligible measures for school year 2024–2025 were 53% and 75%, respectively; these figures provide context, not an explanation for school results.
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