Best Middle Schools in Zip Code 54966

ZIP code 54966 has exactly one middle school, Tri-County Middle in Plainfield, WI, serving grades 6–8 with 134 students as part of the Tri-County Area School District. Because it is the only middle school in the ZIP, families should judge it mainly against state benchmarks and its own three-year trend. Its school rank has improved from 472 of 641 (26th percentile, 1 star) in 2023–2024 to 453 of 628 (28th percentile, 1 star) in 2024–2025 to 435 of 643 (32nd percentile, 2 stars) in 2025–2026. The district rank, however, is low at 381 of 432, or the 12th percentile with 1 star.

Tri-County Middle’s clearest strength is 6th grade math: 86.67% proficient in 2025–2026, versus 53.60% statewide, a gap of +33.07 percentage points, and up from 75.76% the year before. 6th grade ELA also rose to 63.33%, above the state’s 54.95%. The school improved in seven of eight listed Forward Exam areas, with the only decline in 7th grade math, which fell from 58.14% to 48.39%, now 7.28 points below state. The weakest results are in 8th grade: ELA is 28.89% versus 54.38% statewide, science is 31.11% versus 51.86%, math is 42.22% versus 53.67%, and social studies is 53.33% versus 64.63%. Across the eight listed tests, the simple average is about 50.29% at the school versus 55.51% statewide.

Other metrics help explain the picture. Chronic absenteeism is 21.4% at the school, compared with 19.4% in the Tri-County Area School District and 17.3% statewide, which suggests engagement is a concern. The dropout rate is 0.0%, though that measure is less informative for a middle school. Enrollment is 134, free/reduced lunch is 60.45%, per-student spending is $17,605, and the student-teacher ratio is 13.6. For every reported Forward Exam value, school and district scores are identical, so district results for these grades appear to reflect this school directly. Overall, Tri-County Middle shows encouraging improvement and a standout 6th grade math result, but it still needs work in 8th grade achievement, 7th grade math, and chronic absenteeism.