Civic Intelligence

Glenbrook South Instrumental League

EIN 23-7385862 • 501(c)3 • Glenview, IL

Pub. 78 EligibleNTEE A6E0

Profile

Support of the music program which provides experiences for high school students in several aspects of music - jazz, marching and concert.

4000 West Lake AvenueGlenview, IL 60026

www.gbsil.org

Siviq Scores

Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.

Liabilities / Assets

67th percentile

0.02x

Higher debt load relative to assets than 67% of similar nonprofits.

NTEE A • <$500k nonprofits • Source year 2025

Liabilities / Revenue

70th percentile

0.02x

Higher debt load relative to revenue than 70% of similar nonprofits.

NTEE A • <$500k nonprofits • Source year 2025

Net Margin

76th percentile

30%

Higher net margin than 76% of similar nonprofits.

NTEE A • <$500k nonprofits • Source year 2025

Top Officer Pay

80th percentile

$0

Higher top officer pay than 80% of similar nonprofits.

Top officer pay equals 0.0% of source-year revenue.

NTEE A • <$500k nonprofits • Source year 2025

Asset Growth

77th percentile

37%

Faster asset growth than 77% of similar nonprofits.

NTEE A • <$500k nonprofits • Annualized from 2024 to 2025

Revenue Growth

34th percentile

-15%

Faster revenue growth than 34% of similar nonprofits.

NTEE A • <$500k nonprofits • Annualized from 2024 to 2025

Assets

Up

$49,393

Up $13,452 (+37%) from 2024

Liabilities

Up

$806

Up $693 (+613%) from 2024

Net Assets

Up

$48,587

Up $12,759 (+36%) from 2024

Revenue

Down

$42,650

Down $7,731 (-15%) from 2024

Expenses

Down

$29,891

Down $29,565 (-50%) from 2024

Net Income

Up

$12,759

Up $21,834 (+241%) from 2024

Trend Graphs

Balance Sheet Trend

Grouped bars show assets, liabilities, and net assets across loaded filings.

$60K$40K$20K$0Assets 2023: $46,913Liabilities 2023: $2,010Net Assets 2023: $44,9032023Assets 2024: $35,941Liabilities 2024: $113Net Assets 2024: $35,8282024Assets 2025: $49,393Liabilities 2025: $806Net Assets 2025: $48,5872025

Highlighted filing

2025

Assets$49,393
Liabilities$806
Net Assets$48,587

Operations Trend

Revenue, expenses, and net income by year, with the latest filing highlighted.

$60K$40K$20K$0-$20KRevenue 2023: $46,674Expenses 2023: $39,365Net Income 2023: $7,3092023Revenue 2024: $50,381Expenses 2024: $59,456Net Income 2024: -$9,0752024Revenue 2025: $42,650Expenses 2025: $29,891Net Income 2025: $12,7592025

Highlighted filing

2025

Revenue$42,650
Expenses$29,891
Net Income$12,759

Filings

Latest Filing Detail
Jump To
Filing Snapshot
Filing Period
Jun 1, 2024 to May 31, 2025
Signed
Aug 31, 2025
Return Version
2024v5.2
Gross Receipts
$42,650
Mission and Program Overview

Mission

Support of the music program which provides experiences for high school students in several aspects of music - jazz, marching and concert.

Program Services

DescriptionGrantsExpenses
SUPPORT OF THE MUSIC PROGRAM, WHICH PROVIDES EXPERIENCES FOR HIGH SCHOOL STUDENTS IN SEVERAL ASPECTS OF MUSIC - JAZZ, MARCHING ADN CONCERT.-$25,516
Compensation and Service Providers

Employees

NameTitleFull / Part TimeBaseOtherTotal
BETH PARKERPresidentPT$0--
LAURA HANCKOTreasurerPT$0--
RHONDA HUEBLEINSecretaryPT$0--
Filing and Contact Details

Filer

Filer Name
Glenbrook South Instrumental League
EIN
23-7385862
In Care Of
% LAURA HANCKO
Phone
8476910463
Address
4000 WEST LAKE AVENUE, GLENVIEW, IL 60026

Signing Officer

Name
Laura Hancko
Title
Treasurer
Phone
8476910463
Signed
2025-08-31

Preparer

Firm
Downey Advisors LLC
Address
2205 COTTONWOOD DR, GLENVIEW, IL 60026
Preparer
Amy Downey
Phone
8472123505
Supplemental Narrative

Additional Explanations

Form 990EZ Part I Line 8

Description:PROGRAM SERVICE REVENU Amount:25134

Form 990EZ Part I Line 16

Description:OFFICE Amount:320

Form 990EZ Part I Line 16

Description:UNIFORM COSTS Amount:5014

Form 990EZ Part I Line 16

Description:BAND CAMP/MEALS Amount:3625

Form 990EZ Part I Line 16

Description:STUDENT AWARDS/SCHOLARSHIPS Amount:4230

Form 990EZ Part I Line 16

Description:MARCHING BAND PROGRAM COSTS Amount:3910

Form 990EZ Part I Line 16

Description:RECRUITING Amount:232

Form 990EZ Part I Line 16

Description:DRUM MAJOR CLINIC Amount:1845

Form 990EZ Part I Line 16

Description:FUNDRAISING EVENTS Amount:3930

Form 990EZ Part I Line 16

Description:BANQUET Amount:6243

Form 990EZ Part I Line 16

Description:BANDORAMA Amount:417

Form 990EZ Part I Line 16

Description:OTHER Amount:100

Form 990EZ Part I Line 16

Description:TAXES Amount:25

Form 990EZ Part II Line 24

Description:STUDENT FUNDRAISING ACCOUNTS BOY Amount:113

Form 990EZ Part II Line 26

Description:STUDENT FUNDRAISING ACCOUNTS BOY Amount:113 EOY Amount:806

Raw XML Appendix182 raw XML fields

This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.

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IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt0Description:PROGRAM SERVICE REVENU Amount:25134
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt1Description:OFFICE Amount:320
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt2Description:UNIFORM COSTS Amount:5014
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt3Description:BAND CAMP/MEALS Amount:3625
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt4Description:STUDENT AWARDS/SCHOLARSHIPS Amount:4230
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt5Description:MARCHING BAND PROGRAM COSTS Amount:3910
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IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt7Description:DRUM MAJOR CLINIC Amount:1845
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IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt10Description:BANDORAMA Amount:417
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IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt14Description:STUDENT FUNDRAISING ACCOUNTS BOY Amount:113 EOY Amount:806
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc0FORM 990EZ PART I LINE 8
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ReturnHeader/BuildTS02025-03-06 01:10:19Z
ReturnHeader/BusinessOfficerGrp/PersonNm0LAURA HANCKO
ReturnHeader/BusinessOfficerGrp/PersonTitleTxt0TREASURER
ReturnHeader/BusinessOfficerGrp/PhoneNum08476910463
ReturnHeader/BusinessOfficerGrp/SignatureDt02025-08-31
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ReturnHeader/Filer/BusinessNameControlTxt0GLEN
ReturnHeader/Filer/EIN0237385862
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ReturnHeader/Filer/PhoneNum08476910463
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ReturnHeader/Filer/USAddress/CityNm0GLENVIEW
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ReturnHeader/PreparerPersonGrp/PhoneNum08472123505
ReturnHeader/PreparerPersonGrp/PreparationDt02025-08-20
ReturnHeader/PreparerPersonGrp/PreparerPersonNm0AMY DOWNEY
ReturnHeader/ReturnTs02025-09-12T16:45:50-05:00
ReturnHeader/ReturnTypeCd0990EZ
ReturnHeader/TaxPeriodBeginDt02024-06-01
ReturnHeader/TaxPeriodEndDt02025-05-31
ReturnHeader/TaxYr02024

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