School Funding — Richton Park, Illinois

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School Funding — FY2026i

Illinois uses Evidence-Based Funding to determine whether your school districts have enough money. Here's where they stand.

What is Evidence-Based Funding?

Illinois' Evidence-Based Funding (EBF) formula, enacted in 2017, calculates an Adequacy Target for each district — the estimated cost to provide an adequate education. It then compares each district's available resources to that target.

Districts are assigned to Tiers 1-4 based on their percentage of adequacy. Tier 1 districts (most underfunded) receive the largest share of new state funding.

Tier 1: Below 60% of adequacy

Tier 2: 60% to below 90% of adequacy

Tier 3: 90% to below 100% of adequacy

Tier 4: At or above 100% of adequacy

Source: ISBE Evidence-Based Funding

Avg % of Adequacyi

100.8%

Adequacy Gapi

$7.1M

Funding vs. Needi

RICH TWP H S DISTRICT 22796.56%

$52.2M funded$54.0M target

MATTESON ELEM SCHOOL DIST 16285.9%

$31.8M funded$37.0M target

ELEM SCHOOL DISTRICT 159130.57%

$32.6M funded$24.9M target

District Detail

RICH TWP H S DISTRICT 227Tier 3

96.56% funded$1.9M gap

90-100% of adequacy — receives limited new state funding

The state estimates it costs $54.0M to adequately educate all students in this district. The district currently has $52.2M in resources — that's 96.56% of what it needs. There's a $1.9M gap between what the district has and what it needs.

What it needsi

$54.0M

What it hasi

$52.2M

From the statei

$32.8M

This district is better funded than 73% of districts statewide.

MATTESON ELEM SCHOOL DIST 162Tier 2

85.9% funded$5.2M gap

60-90% of adequacy — receives moderate new state funding

The state estimates it costs $37.0M to adequately educate all students in this district. The district currently has $31.8M in resources — that's 85.9% of what it needs. There's a $5.2M gap between what the district has and what it needs.

What it needsi

$37.0M

What it hasi

$31.8M

From the statei

$22.2M

This district is better funded than 62% of districts statewide.

ELEM SCHOOL DISTRICT 159Tier 4

130.57% funded

At or above 100% of adequacy — fully funded

The state estimates it costs $24.9M to adequately educate all students in this district. The district currently has $32.6M in resources — that's 130.57% of what it needs. This district meets or exceeds its funding target.

What it needsi

$24.9M

What it hasi

$32.6M

From the statei

$10.0M

This district is better funded than 94% of districts statewide.

Statewide Tier Distributioni

Tier 1: 36

Tier 2: 579 (yours)

Tier 3: 96 (yours)

Tier 4: 221 (yours)