What is the Evidence-Based Funding (EBF) model?

State funding formulas calculate an 'adequacy target' for each district based on student needs (poverty, English learners, special education) and compare it to available local resources. Districts furthest from their target receive the most new state funding.

What does the funding gap mean?

The funding gap is the difference between what a district needs (its adequacy target) and what it currently receives from all sources. A district at 90% of its adequacy target has a 10% funding gap. States aim to bring all districts to at least 90% adequacy over time.

How are EBF tiers determined?

Districts are grouped into four tiers based on their percentage of adequacy: Tier 1 (below 70%), Tier 2 (70-90%), Tier 3 (90-100%), and Tier 4 (above 100%). New state funding flows primarily to Tier 1 and Tier 2 districts to close the biggest gaps first.

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East Hazel Crest, IL

CSAChicago-Naperville MSAChicago-Naperville-Elgin#303/341 Population

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State Education Funding Data

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School Funding — FY2026i

NCES

State funding formulas determine whether your school districts have enough money. Here's where they stand.

How School Funding Works

State funding formulas calculate an Adequacy Target for each district, the estimated cost to provide an adequate education. Districts are then compared against 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: State Education Funding Data

Avg % of Adequacyi

88.5%

Adequacy Gapi

$12.1M

Funding vs. Needi

Thornton Twp H S Dist 20590.78%

$79.9M funded$88.0M target

Hazel Crest School Dist 152-582.07%

$12.3M funded$15.0M target

Thornton School District 15468.57%

$2.8M funded$4.2M target

District Detail

Thornton Twp H S Dist 205Tier 3

90.78% funded$8.1M gap

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

The state estimates it costs $88.0M to adequately educate all students in this district. The district currently has $79.9M in resources — that's 90.78% of what it needs. There's a $8.1M gap between what the district has and what it needs.

What it needsi

$88.0M

What it hasi

$79.9M

From the statei

$55.3M

This district is better funded than 67% of districts statewide.

Hazel Crest School Dist 152-5Tier 2

82.07% funded$2.7M gap

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

The state estimates it costs $15.0M to adequately educate all students in this district. The district currently has $12.3M in resources — that's 82.07% of what it needs. There's a $2.7M gap between what the district has and what it needs.

What it needsi

$15.0M

What it hasi

$12.3M

From the statei

$9.8M

This district is better funded than 56% of districts statewide.

Thornton School District 154Tier 2

68.57% funded$1.3M gap

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

The state estimates it costs $4.2M to adequately educate all students in this district. The district currently has $2.8M in resources — that's 68.57% of what it needs. There's a $1.3M gap between what the district has and what it needs.

What it needsi

$4.2M

What it hasi

$2.8M

From the statei

$1.2M

This district is better funded than 8% of districts statewide.

Statewide Tier Distributioni

Tier 1: 36

Tier 2: 579 (yours)

Tier 3: 96 (yours)

Tier 4: 221

East Hazel Crest, IL School Funding Gaps & Adequacy