Joseph Widmer Jr. Elementary

Joseph Widmer Jr. Elementary is a sizable primary school in Lathrop, California, part of Manteca Unified. The school serves 923 students in grades K through 8. Enrollment runs roughly 98% bigger than the state mean of about 465.

Manteca Unified comprises 30 schools with combined enrollment of 25,347 students; Joseph Widmer Jr. Elementary is among them.

On demographics, Joseph Widmer Jr. Elementary records that 46% of students identify as Hispanic, with the remaining enrollment distributed across several groups. Other groups include 33% Asian, 8% White, 6% Black, 4% multiracial. Compared to San Joaquin County overall, the school's racial mix sits in roughly the same range.

On the resource side, Joseph Widmer Jr. Elementary records 38 full-time-equivalent teachers, putting the student-to-teacher ratio at about 24.5:1. That figure is higher than the state norm's 22.3:1 average. About 64% of enrolled students meet the income threshold for free or reduced-price lunch, a number frequently used as a low-income enrollment indicator.

After controlling for student poverty, On a poverty-adjusted basis, Joseph Widmer Jr. Elementary sits in the bottom 10% statewide. Predicted proficiency from the FRL regression is roughly 41.2%; actual is 25.1%, a gap of -16.0 points.

In the surrounding community, census data for San Joaquin County shows median household income runs about $92,179, roughly 23% of adults have completed at least a four-year degree, and census figures put the poverty rate at about 10%. In all, San Joaquin County runs 251 public schools (combined enrollment of about 153,026 students), of which Joseph Widmer Jr. Elementary is one.

The closest other public school is Lathrop Elementary, roughly 1.3 miles away. Within five miles, there are 8 other public schools. On composite proficiency, Joseph Widmer Jr. Elementary comes 6th of 8 in the immediate cluster, beneath the nearby-schools average of 31.2%.

Joseph Widmer Jr. Elementary operates from a commuter-belt location.

Trend over the last 7 years. Over the past 7-year window, the student count increased 11%: 831 students in 2018 compared to 923 in 2025. Asian enrollment moved from 22% to 33% across the same window. Class-load math has fell: from 26.8:1 in 2018 to 24.5:1 in 2025.

On this page, the page collects discussion, questions, and updates around fundraisers, lost-and-found posts, and report-card season. Anyone with firsthand experience at this school can post or comment.