NJ School Data

South Orange–Maplewood · entering kindergarten · 2020–21 to 2024–25

Did the district's assignment policy make kindergarten classes more socioeconomically balanced?

The district's published measure improved sharply after the policy began; these descriptive data alone cannot prove the assignment policy caused the change.

Before III, 0 of 5 schools were within the ±5-point target used in the published Year 1–4 reports in all three tiers. In 2024–25, 5 of 6 were; Clinton's High tier was the lone miss at 7 points below the district share.

0 of 5schools within all three tier targets, 2020–21 baseline
5 of 6schools within all three tier targets, 2024–25
Entering cohort

These are kindergarten assignments, not each school's full enrollment.

District grain

Each variance compares one school's tier share with the districtwide kindergarten share that year.

Aggregate

Each year is a cohort distribution. The series does not follow the same children over time.

Not causal

The before-and-after pattern does not isolate the assignment policy from enrollment or other changes.

Where the target held — and where it missed

The target used in the published Year 1–4 reports was for each school's Low, Medium, and High tier shares to sit within 5 percentage points of the district's kindergarten mix. A school counts here only when all three tiers are inside or on that band.

Schools meeting the target in all three socioeconomic tiers
Entering yearWithin targetTier misses beyond ±5 points
2020–21Before III 0 of 5 Seth Boyden: Low +43, Medium −13, High −30; South Mountain: Low −19, High +19; Tuscan: Medium +9, High −9; Clinton: Medium +17, High −17; Marshall: Low −8, Medium −10, High +18
2021–22Year 1 2 of 5 Seth Boyden: Low +8, High −7; Tuscan: Low −6, Medium +6; Clinton: High −6
2022–23Year 2 5 of 5 All schools met the target
2023–24Year 3 4 of 6 Seth Boyden: Low +6, High −7; Delia Bolden: Low −6
2024–25Year 4 5 of 6 Clinton: High −7

What schools were measured against

Districtwide entering-kindergarten share in each SES tier
YearLowMediumHigh
2020–2130%31%39%
2021–2235%32%33%
2022–2335%30%36%
2023–2431%34%35%
2024–2532%29%39%

What the tiers mean. The reports assign Low, Medium, and High SES tiers using neighborhood family income and adult educational attainment from Census block-group estimates. Low SES is a constructed tier, not a poverty or free/reduced-lunch count, and may not match each family's circumstances.

Why race is not shown. Race is not the assignment metric and is not substituted here as a proxy for socioeconomic status.

School-by-year evidence

Each cell shows the share of that school's entering kindergarten class in the tier, followed by its percentage-point variance from the district share. Shaded cells are beyond ±5 points. Missing years stay missing, never zero.

Seth Boyden

Seth Boyden entering-kindergarten SES shares; parentheses show percentage-point variance from the district share
YearLowMediumHigh
2020–21Missed target 73% (+43) 18% (−13) 9% (−30)
2021–22Missed target 43% (+8) 31% (−1) 27% (−7)
2022–23Within target 39% (+5) 29% (0) 31% (−4)
2023–24Missed target 37% (+6) 35% (+1) 28% (−7)
2024–25Within target 36% (+4) 30% (+1) 34% (−5)

South Mountain

South Mountain entering-kindergarten SES shares; parentheses show percentage-point variance from the district share
YearLowMediumHigh
2020–21Missed target 11% (−19) 31% (0) 58% (+19)
2021–22Within target 30% (−5) 32% (0) 38% (+5)
2022–23Within target 32% (−2) 30% (0) 38% (+2)
2023–24Within target 29% (−2) 32% (−2) 39% (+4)
2024–25Within target 27% (−5) 30% (+1) 43% (+4)

Tuscan

Tuscan entering-kindergarten SES shares; parentheses show percentage-point variance from the district share
YearLowMediumHigh
2020–21Missed target 30% (0) 40% (+9) 30% (−9)
2021–22Missed target 29% (−6) 38% (+6) 32% (−1)
2022–23Within target 36% (+2) 33% (+3) 31% (−5)
2023–24Within target 31% (0) 38% (+3) 31% (−4)
2024–25Within target 30% (−2) 30% (+1) 40% (+1)

Clinton

Clinton entering-kindergarten SES shares; parentheses show percentage-point variance from the district share
YearLowMediumHigh
2020–21Missed target 30% (0) 48% (+17) 22% (−17)
2021–22Missed target 40% (+5) 35% (+3) 27% (−6)
2022–23Within target 38% (+4) 29% (−1) 33% (−3)
2023–24Within target 34% (+3) 34% (0) 32% (−3)
2024–25Missed target 36% (+4) 31% (+2) 33% (−7)

Marshall

Marshall entering-kindergarten SES shares; parentheses show percentage-point variance from the district share
YearLowMediumHigh
2020–21Missed target 22% (−8) 21% (−10) 57% (+18)
2021–22Within target 38% (+3) 27% (−4) 35% (+2)
2022–23Within target 32% (−3) 28% (−1) 40% (+4)
2023–24Within target 30% (0) 32% (−3) 38% (+3)
2024–25Within target 32% (0) 27% (−2) 41% (+2)

Delia Bolden

Delia Bolden entering-kindergarten SES shares; parentheses show percentage-point variance from the district share
YearLowMediumHigh
2020–21 Not reported — this school was not K-serving in this series
2021–22 Not reported — this school was not K-serving in this series
2022–23 Not reported — this school was not K-serving in this series
2023–24Missed target 25% (−6) 38% (+4) 37% (+2)
2024–25Within target 30% (−2) 26% (−3) 44% (+4)

Sources and coverage

The values above are transcribed from the district's published Alves Group reports. Percentages may not sum to 100 because the reports round them; the displayed variances are the reports' values.

Coverage ends in 2024–25. This page does not infer 2025–26 tier results or describe the ±5 band as the district's current 2026–27 target. Delia Bolden appears when it began serving kindergarten in 2023–24.

Baseline rounding note. The Year 1 report's narrative summarizes the 2020–21 district mix as 29% Low, 32% Medium, and 40% High and Seth Boyden's Low variance as +42. Table 1 displays 30%, 31%, 39%, and +43. This page follows the report's Table 1 values and stated variances, as transcribed in the downloadable data; it does not recompute variances from rounded shares.