Arbor Park SD 145 vs Union Ridge SD 86
IL · 1,182 students • IL · 664 students • fiscal year 2024 • swap sides
In one line
- Arbor Park SD 145 spends 12% more per student than Union Ridge SD 86 after adjusting for local price levels.
- Union Ridge SD 86 directs 13 more cents of every operating dollar to instruction than Arbor Park SD 145.
- Union Ridge SD 86 is far more dependent on local property taxes (62% of revenue vs 49%), which ties its budget more tightly to local property values.
Are these even comparable?
Establish the shape of each district before reading a single dollar figure.
| Arbor Park SD 145 | Union Ridge SD 86 | |
|---|---|---|
| Students enrolled | 1,182 | 664 |
| Schools | 4 | 1 |
| Grades served | PK–8 | PK–8 |
| Setting | Suburb | Suburb |
| County | Cook County | Cook County |
| State | IL | IL |
| Local price level (US = 100) BEA Regional Price Parity. Above 100 means a dollar buys less here than the national average. | 103.6 | 103.6 |
The headline dollar
Current operating spending per student, shown three ways. The first is what each district reports. The second and third are the honest ones for comparison.
| Arbor Park SD 145 | Union Ridge SD 86 | |
|---|---|---|
| Per student, as reported | $19,278 | $17,141 |
| Per student, price-adjusted Divided by the local price level, so both figures are in the same money. | $18,609 | $16,546 |
| Per student, price-adjusted, excluding transport Transportation provision varies enormously between districts and states. Removing it compares the parts both districts actually do. | $16,965 | $16,228 |
| Capital spending per student Buildings and land, reported separately and never folded into the operating figures above. It is lumpy: a district mid-build looks expensive for two years. | Locked | Locked |
Arbor Park SD 145
Union Ridge SD 86
Where the money comes from
The funding mix determines how exposed a district is to local property values, to state politics, and to federal programmes ending.
Arbor Park SD 145
- Local 49.3% Locked
- State 45.4% Locked
- Federal 5.3% Locked
Union Ridge SD 86
- Local 62.3% Locked
- State 32.8% Locked
- Federal 4.9% Locked
| Arbor Park SD 145 | Union Ridge SD 86 | |
|---|---|---|
| Local share of revenue Mostly property tax. A high share means school budgets track local property values, up and down. | 49.3% | 62.3% |
| State share of revenue | 45.4% | 32.8% |
| Federal share of revenue | 5.3% | 4.9% |
| Total revenue | Locked | Locked |
How IL funds its districts
Evidence-Based Funding: an adequacy target per district, with new state money directed first to districts furthest below their target.
How IL funds its districts
Evidence-Based Funding: an adequacy target per district, with new state money directed first to districts furthest below their target.
Where the money goes
The same slices in the same order for both districts, plus the differences by function — because two pie charts side by side hide exactly the thing you want to see.
Arbor Park SD 145
- Instruction 49.1% Locked
- Instructional staff support 5.0% Locked
- Student support 5.1% Locked
- Operations & maintenance 10.5% Locked
- Transportation 8.8% Locked
- Food service 2.1% Locked
- School administration 4.8% Locked
- District administration 4.5% Locked
- Other support 3.1% Locked
- Other current 2.1% Locked
Union Ridge SD 86
- Instruction 66.5% Locked
- Instructional staff support 0.7% Locked
- Student support 4.9% Locked
- Operations & maintenance 7.8% Locked
- Transportation 1.9% Locked
- Food service 2.1% Locked
- School administration 4.2% Locked
- District administration 4.8% Locked
- Other support 1.4% Locked
- Other current 2.4% Locked
What is actually different
Share of each district's operating dollar, Arbor Park SD 145 minus Union Ridge SD 86. Two pie charts side by side are almost impossible to read against each other; this is the same data as one chart.
| Arbor Park SD 145 | Union Ridge SD 86 | |
|---|---|---|
| Cents of each operating dollar reaching classrooms Instruction plus instructional staff support, as a share of current spending. | 54.0% | 67.2% |
| Administration share District office plus school administration. | 9.3% | 9.0% |
| Transportation share | 8.8% | 1.9% |
What the money buys
Staffing levels are the most direct thing a budget converts into.
| Arbor Park SD 145 | Union Ridge SD 86 | |
|---|---|---|
| Students per teacher This is a staffing ratio: total enrolment divided by teaching staff. It is NOT average class size, which no national source collects. Actual classes are larger than this number in every district. | 12.6 | 13.3 |
| Students per counsellor | Locked | Locked |
| Students per administrator | Locked | Locked |
| Total salaries All staff, not teachers alone. The federal survey does not separate teacher pay. | Locked | Locked |
Who they serve
The answer to "but they serve different kids" — which is usually a fair objection.
| Arbor Park SD 145 | Union Ridge SD 86 | |
|---|---|---|
| Child poverty rate Census SAIPE estimate of children aged 5–17 in poverty within the district boundary. Used instead of free-lunch eligibility, which community eligibility has made unusable for comparison. | 15.6% | 16.2% |
| English learners | 0 | 0 |
| Students with disabilities | 0 | 0 |
| Enrolment change, 5 years | -5.4% | +0.5% |
Results, and results for the money
Stability and risk
The homebuyer’s real question: what is likely to change after I move in?
Arbor Park SD 145
- Declining enrollment Enrolment fell more than 5% over five years. Enrolment decline is the single best predictor of school closures and programme cuts.
- High debt burden More than 10% of total spending goes to interest and debt retirement, money that cannot reach a classroom.
- Low share reaching classrooms Under 55% of current spending reaches instruction and instructional support, low against national practice.
Union Ridge SD 86
No stability flags raised.
| Arbor Park SD 145 | Union Ridge SD 86 | |
|---|---|---|
| Enrolment change, 5 years | -5.4% | +0.5% |
| Long-term debt per student | Locked | Locked |
| Debt service share of spending | Locked | Locked |
Enrolling a child
The same checklist for both districts, read off each district’s own enrolment page. Every "required" below links to the sentence it came from.
Arbor Park SD 145
Arbor Park School District 145 - Registration
Almost nothing could be read off this page — usually a portal that builds its content in the browser. Treat the column below as "we could not tell", and open the district's page yourself.
Read August 23, 2026.
Union Ridge SD 86
Union Ridge SD86 | Registration
Registration runs through Skyward. Read August 23, 2026.
Is a seat at your zoned school guaranteed?
Arbor Park SD 145
We have no such statement from this district — which is not the same as a promise that your zoned school has room. Most districts never publish the policy in either direction, and we have read only a fraction of the ones that do. Ask the school office directly whether your address’s school is enrolling at your child’s grade level before you sign anything.
Union Ridge SD 86
We have no such statement from this district — which is not the same as a promise that your zoned school has room. Most districts never publish the policy in either direction, and we have read only a fraction of the ones that do. Ask the school office directly whether your address’s school is enrolling at your child’s grade level before you sign anything.
- This is the district’s own published wording, not our summary of it. Policies are rewritten between enrolment seasons and a page can be out of date the day after we read it — the school office is the only authority on whether a particular grade at a particular school is full right now.
- A warning here is about capacity, not about your address. It does not mean your child will be moved; it means the district has told you in writing that it may move them.
- Required the page says so, and the sentence is quoted.
- Mentioned only it comes up, but not as a requirement — often a sentence saying the district cannot demand it.
- Not mentioned we read the page and it was not on it. That is not the same as "not required".
- Page not read we have no enrolment page for this district.
Documents to bring
| Arbor Park SD 145 | Union Ridge SD 86 | |
|---|---|---|
| Proof of residency | Required “A Proof of Residency is required for all new families and any family moving within district boundaries.” | Required “All District 86 residents must provide proof of residency.” |
| Proof of age (usually a birth certificate) | Not mentioned | Required “Student's birth certificate” |
| Immunisation records | Not mentioned | Required “Current physical/immunization record on the Illinois Department of Human Services (DHS) form.” |
| Physical examination | Not mentioned | Not mentioned |
| Dental, vision or hearing screening | Not mentioned | Not mentioned |
| Tuberculosis test | Not mentioned | Not mentioned |
| Records from the previous school | Not mentioned | Not mentioned |
| IEP or 504 plan | Not mentioned | Not mentioned |
| Custody or guardianship paperwork | Not mentioned | Required “court order agreement, judgment or decree that gives custody of the child to any person, including divorce decrees to one or both parents” |
| Parent or guardian photo ID | Not mentioned | Not mentioned |
| Home language survey | Not mentioned | Not mentioned |
| Emergency contact information | Not mentioned | Not mentioned |
| Proof of income | Not mentioned | Required “Proof of Income is required.” |
| Social security number Asked for by some districts. It is not required to enrol, and a school may not refuse a child who does not provide one. We list it because districts ask, not because you must answer. | Not mentioned | Not mentioned |
How enrolling works
Locked 11 steps of the enrolment process — deadlines, appointments, proof of residency — are not shown. What to bring is above, and stays free.
- A blank row means the requirement did not appear on the page we read. It does not mean the district will not ask for it — published lists are routinely incomplete, and the registrar has the final word.
- Requirements change every enrolment season. Check the district’s own page, linked above, before you gather anything.
- A district cannot condition enrolment on your child’s immigration status: under Plyler v. Doe (1982) every child resident in the district is entitled to a free public education. If a district asks for something that would reveal status, you are not obliged to provide it.
- If your family is in temporary or shared housing, the McKinney-Vento Act lets a child enrol immediately without the residency and records documents listed here. Ask for the district’s homeless liaison by name.
Comparability notes
No comparability caveats: these two are a like-for-like pair.
What these numbers are, exactly
- Finance: US Census Bureau Annual Survey of School System Finances (F-33), fiscal year 2024.
- Enrolment, staffing and directory: NCES Common Core of Data via the Urban Institute Education Data Portal, 2024.
- Child poverty: Census SAIPE school-district estimates, 2024.
- Price levels: BEA Regional Price Parities, 2024.
- Districts self-report to the F-33 survey. States differ in what they count as an operating expense, and several pay teacher pensions centrally so that cost never appears in a district’s books. No arithmetic fixes that; we name it instead.
- Property tax basis and borrowing: the same F-33 filing, revenue codes T06 and T02 and the long-term debt schedule (_19H, _21F, _31F, _41F).
Who decides, and what it costs you
Every band above this one asks what a district spends. This one asks who chose to.
Arbor Park SD 145
The district levies its own school tax
This district raises property tax in its own name. Who sets the rate varies by state — an elected board in some, a public vote in others — but the levy is the school system’s own, and it is the part of a tax bill that school politics moves most directly.
Union Ridge SD 86
The district levies its own school tax
This district raises property tax in its own name. Who sets the rate varies by state — an elected board in some, a public vote in others — but the levy is the school system’s own, and it is the part of a tax bill that school politics moves most directly.
| Arbor Park SD 145 | Union Ridge SD 86 | |
|---|---|---|
| School property tax levied, per student Only for districts that levy in their own name. Blank where the county or town levies instead — see the cards above, and read the next row. | $11,023 | $11,264 |
| Appropriated by the county or town, per student What the parent government handed the schools, for dependent systems. This is a general appropriation, not solely property tax. | — | — |
| Property tax as a share of all revenue How much of the budget rides on local property values, and therefore on local votes. | 45.4% | 56.9% |
| Long-term debt already owed, per student The balance at the end of the year, for scale. Repaid over decades, so it is a commitment made by earlier boards rather than a bill arriving now. | Locked | Locked |
| Debt service as a share of spending Interest plus principal repaid this year, against total spending. This is the part of the debt that is being paid now, out of money that would otherwise reach a classroom. | Locked | Locked |
| New long-term debt issued, per student Money borrowed during fiscal year 2024, as reported to the federal survey. What this figure does and does not tell you is set out under the table. | $0 | $0 |
- Arbor Park SD 145: issued no new long-term debt in fiscal year 2024. That is a reported zero, not a gap in the data.
- Union Ridge SD 86: issued no new long-term debt in fiscal year 2024. That is a reported zero, not a gap in the data.
- A figure in the borrowing row is not a bond voters approved. The federal survey records debt issued, and that includes refinancing existing debt at a new rate — which changes nothing about what a district owes — as well as certificates of participation and lease-revenue debt, which in many states a board can issue with no referendum at all. To find out what was actually on a ballot, check the county election office.
- Debt is repaid over decades. A large balance per student is a commitment made by earlier boards and earlier voters, not a bill arriving this year. The debt service row above it is the part being paid now.
Who sits on the board
Arbor Park SD 145 board of education
- Bradley Popovich — President
- Kara Fanelli — Vice President
- Caitlyn Murphy — Secretary
- Tina Moslander
- Wendy Lux
- Christina Doege
- Sarah Case
4 of these are listed on the page without an office. It names them among the board without saying which office they hold, so none is shown for them. It is not a vacancy.
- The public may speak: “MAY I SPEAK AT THE BOARD MEETING?”
- A seat is vacant or being filled: “Each Illinois school board member who is elected or appointed to fill a vacancy of at least one year's duration must receive professional development leadership training (PDLT) and (P.A.”
Read from the district’s own board page on 2026-08-24. Boards change; the district’s page is the current record, not ours.
Union Ridge SD 86 board of education
- Jola Klopotowski — President
- Demetrios Styliaras — Vice President
- Josephine Savarino — Secretary
- Peter Biel — Member
- Amelio Notardonato — Member
- Karl Van Giesen — Member
- Jeanne Keane — Member
Read from the district’s own board page on 2026-08-24. Boards change; the district’s page is the current record, not ours.
What this band does not answer yet
Unlock the full comparison of Arbor Park SD 145 and Union Ridge SD 86
The verdict, the headline dollar, the funding shares, who is served and every comparability caveat are free above, and stay free. What is behind the lock is the detail you would want before acting on any of it:
- capital spending per student
- total revenue and the funding mix in dollars
- the ten-line per-student breakdown of where the money goes
- counsellor and administrator ratios, and the total salary bill
- the debt behind the risk flags — per student, and as a share of spending
- the enrolment process — deadlines, appointments and proof of residency
$19 once for this pair, or $7 a month for every district in the country.
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