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MAMMOTH HIGH SCHOOL BOOSTER CLUB

EIN 77-0529260 MAMMOTH LAKES, CA

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Revenue 2024
$247,364
Expenses 2024
$166,270

Program services were 99.1% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
B80
Classification
2000
Street
PO BOX 3149

These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).

Mission and programs · 2024

Mission

MHS Boosters is a non-profit, all volunteer, parent-teacher-community organization. Our mission is to: Assist Mammoth High School by fostering cooperation and communication between parents, staff, students and the public, and to promote success in academics, athletics, and the arts.

  • Athletic Program Support includes teams' general expenses, uniforms and equipment, referees, travel, recognition, and Athletic Director expenses.

    Expenses $104,366

  • Academic Program Support includes Art Music, student clubs, academic and teacher requests, and teacher appreciation.

    Expenses $13,773

  • Student Support includes senior class event expenses, student awards and scholarships.

    Expenses $46,656

As filed on the 2024 return.

Officers and directors · 2024

As listed in Part VII of the 2024 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • Romi Skolnik

    President

    Total calculated
    $0
    Hours/week
    5

  • Susan Petroni

    Vice President

    Total calculated
    $0
    Hours/week
    0.5

  • Christine Gramlich

    Treasurer

    Total calculated
    $0
    Hours/week
    5

  • Erick Sugimura

    Treasurer

    Total calculated
    $0
    Hours/week
    5

  • Marcy Castro

    Secretary

    Total calculated
    $0
    Hours/week
    1

  • Cathy Dalrymple

    Secretary

    Total calculated
    $0
    Hours/week
    1

  • Antonette Ciccarelli

    Membership Coordinator

    Total calculated
    $0
    Hours/week
    2

  • Sheilah Brode

    Banners Coordinator

    Total calculated
    $0
    Hours/week
    2

  • Mary Beth Ericson

    Media: Coordinator

    Total calculated
    $0
    Hours/week
    5

Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead, and on a Form 990-PF Part VIII's — compensation, contributions to benefit plans, and expense account — and the total sums those. Earlier years are each on their own filing page.

Filings

  • 2024
    Revenue
    $247,364
    Expenses
    $166,270
    Contributions
    $238,517
    Grants paid
    $0
  • 2023
    Revenue
    $314,965
    Expenses
    $310,290
    Contributions
    $310,447
    Grants paid
    $0
  • 2022
    Revenue
    $333,463
    Expenses
    $287,793
    Contributions
    $333,463
    Grants paid
    $0

The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.

Other returns filed

  • 2021 · 990

    Revenue
    $258,893
    Expenses
    $240,197
    Assets (EOY)
    $149,774

  • 2020 · 990-EZ

    Revenue
    $135,153
    Expenses
    $121,338
    Assets (EOY)
    $131,078

  • 2019 · 990-EZ

    Revenue
    $128,545
    Expenses
    $146,682
    Assets (EOY)
    $117,263

  • 2018 · 990-EZ

    Revenue
    $171,539
    Expenses
    $182,227
    Assets (EOY)
    $135,400

  • 2017 · 990-EZ

    Revenue
    $173,303
    Expenses
    $123,149
    Assets (EOY)
    $146,088

  • 2016 · 990-EZ

    Revenue
    $94,272
    Expenses
    $115,571
    Assets (EOY)
    $95,934

  • 2015 · 990-EZ

    Revenue
    $158,276
    Expenses
    $141,391
    Assets (EOY)
    $117,233

  • 2014 · 990

    Revenue
    $202,170
    Expenses
    $164,101
    Assets (EOY)
    $100,348

  • 2013 · 990-EZ

    Revenue
    $134,677
    Expenses
    $141,286
    Assets (EOY)
    $85,802

  • 2012 · 990-EZ

    Revenue
    $137,081
    Expenses
    $127,297
    Assets (EOY)
    $76,483

Nonprofiteer parses Forms 990, 990-EZ and 990-PF, in a window of recent tax years. These returns are recorded from the IRS e-file index, so their figures were extracted by that index rather than read from the return here — treat them as a different source from the filings above, not as more of the same record. A dash means the index carries no figure; Form 990-T listings carry none at all. Showing the 10 most recent; the API carries the rest.

Grants made

No itemized grants to organizations. Schedule I is filed only by organizations that granted more than $5,000 to a recipient, so most filers have none.

Grants received

Other IRS files

Auto-Revocation List

Not listed. The IRS publishes this list for organizations whose exemption was automatically revoked for failing to file for three consecutive years.

Publication 78

Listed as of 13 October 2026, under deductibility PC.

These are two separate IRS files on two separate schedules, shown as published and not reconciled with each other. Neither is a statement about whether a contribution is deductible today: 19,245 organizations appear in Publication 78 while the IRS's own revocation file lists them as currently revoked, more than half of those revoked before 2019. Absence from Publication 78 is evidence of nothing, and presence is not evidence either. Verify current status with the IRS before relying on it.

What this page reflects

The registration facts above come from the IRS Business Master File published 13 October 2026 and read 1 November 2026, for every organization at once. Returns through tax year 2024, the newest we have parsed for this organization.