WASHINGTON OUTDOOR SCHOOL

As filed

Subsection

03

NTEE code

O50

Classification

2000

Street

PO BOX 327

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 · 2025

• WE OFFER YEAR AROUND, ALL OUTDOOR NATURE-BASED IMMERSION EDUCATION TO CHILDREN AGES 0-13 AND THEIR FAMILIES IN KITTITAS COUNTY IN MORNING AND AFTER SCHOOL DURING THE SCHOOL YEAR AND SUMMER CAMP PROGRAMS. SCHOOL YEAR PROGRAMS RUN FROM SEPTEMBER TO JUNE. MORNING PROGRAMS ARE 1-4 DAYS PER WEEK, UP TO 4 HOURS PER DAY. AFTER SCHOOL PROGRAMS ARE 1-4 DAYS PER WEEK FOR 2 HOURS PER DAY. SUMMER CAMPS ARE 4 DAYS PER WEEK FOR UP TO 6 HOURS A DAY FOR 7 WEEKS IN JULY AND AUGUST. TYPICALLY, WE SERVE APPROXIMATELY 150 STUDENTS IN THESE PROGRAMS.

  Expenses $67,916

As filed on the 2025 return.

Officers and directors · 2025

As listed in Part VII of the 2025 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

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

• 2025

  Revenue

  $136,206

  Expenses

  $85,916

  Contributions

  $45,822

  Grants paid

  $0

• 2024

  Revenue

  $132,330

  Expenses

  $141,075

  Contributions

  $37,771

  Grants paid

  $0

• 2023

  Revenue

  $174,807

  Expenses

  $155,690

  Contributions

  $73,278

  Grants paid

  — not reported

• 2022

  Revenue

  $140,146

  Expenses

  $142,421

  Contributions

  $38,546

  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-EZ

  Revenue

  $140,607

  Expenses

  $146,355

  Assets (EOY)

  $116

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.

Form 990-N e-Postcard, tax year 2018

Tax period

1 January 2018 to 31 December 2018

Principal officer

Sibyl Maer Fillo

Mailing address

PO Box 327Roslyn WA 98941

Website

waoutdoorschool.org

As filed, from the IRS e-Postcard file of 2 November 2026. The IRS publishes only each organization's most recent postcard, so earlier years are not shown. A 990-N carries no financial detail. The postcard also gives the principal officer's address, which is not shown here.

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

• GREATER TACOMA COMMUNITY FOUNDATION

  $20,000

  2022 · OPERATING SUPPORT

• SUNCADIA FUND FOR COMMUNITY ENHANCEMENT

  $15,500

  2023 · K-5 OUTDOOR PROGRAM

• SUNCADIA FUND FOR COMMUNITY ENHANCEMENT

  $15,000

  2024 · K-5 OUTDOOR PROGRAM

• THE SEATTLE FOUNDATION

  $10,000

  2023 · TO SUPPORT THE AFTER-SCHOOL PROGRAM.

• THE SEATTLE FOUNDATION

  $7,500

  2023 · PROF. DEV. TRAINING/TECH UPGRADES

Other IRS files