Thelma L. Sandmeier Elementary School
School pathway
Test scores
NJSLA 2024-25 . % Meeting or Exceeding ExpectationsWhat this means: On the NJSLA, New Jersey's statewide test, about 63 of every 100 students at this school read and write at grade level and about 61 of 100 do math at grade level. Across all New Jersey schools, those numbers are about 53 and 42. Reading and writing scores are up about 5 points since 2023, while math scores are up about 4 points.
BeatsExpectations
Demographically-adjusted score · methodologyWhat this means: About 55% of students here test proficient in math and reading, compared with the roughly 59% typical for New Jersey schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among New Jersey's top nor bottom 10%.
7-year change
SY 2017-18 vs SY 2024-25About Thelma L. Sandmeier Elementary School
Located at 666 South Springfield Ave., in Springfield, New Jersey, Thelma L. Sandmeier Elementary School is a small primary school that teaches 276 students (grades 3 through 5), overseen by Springfield Public School District. Enrollment runs roughly 32% smaller than the state mean of about 405.
Springfield Public School District comprises 5 schools with combined enrollment of 2,191 students; Thelma L. Sandmeier Elementary School is among them.
Looking at the student body, Thelma L. Sandmeier Elementary School shows that 54% of students identify as White, with the remaining enrollment distributed across several groups. The remainder comes out to 17% Hispanic, 16% Black, 6% Asian, 4% multiracial. That is meaningfully more White than the county at large, where the share is closer to 39%.
On the resource side, On paper, Thelma L. Sandmeier Elementary School has 23 full-time-equivalent teachers, translating to a class-load average of around 12.0:1. The state averages about 11.4:1, putting this campus right in line with peers. An estimated 14% of students are eligible for free or reduced-price lunch, a commonly cited indicator of low-income enrollment. Set against Union County (around 52%), the school's rate is noticeably below typical.
On a demographically-adjusted basis, Thelma L. Sandmeier Elementary School sits in the middle band of the BeatsExpectations distribution. Schools with this campus's student mix typically land near 58.6%; this one delivers 55.2%.
In the broader community, Union County reports that median household income runs about $103,202, roughly 39% of adults have completed at least a four-year degree, and the poverty rate sits near 7%. Across Union County's 180 public schools (combined enrollment of about 99,046 students), Thelma L. Sandmeier Elementary School is one campus in the mix.
Nearest neighbor: Edward V. Walton Primary School, around 0.2 miles off. Within five miles, there are 8 other public schools. Ranking that nearby cluster on reported proficiency puts Thelma L. Sandmeier Elementary School at 4th of 7; the average score across the group is 52.0%.
The campus sits in a commuter-belt setting.
Looking at the recent track record. Over the past 7-year window, the student count climbed 6%: 261 students in 2018 compared to 276 in 2025. The Black share of enrollment climbed from 12% to 16% over that span.
Within the allk12 community for this school, the page collects discussion, questions, and updates around school events, parent volunteer needs, and clubs. The community welcomes input from current and former families.
Union County at a glance
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