Nonprofit · EIN 35-2374612
WALDEN SCHOOL
Tax-exempt · SAN FRANCISCO, CA 94131
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| September 30, 2025 | 990 | $1,664,074 | $1,537,801 | $126,273 | $1,126,037 | $388,328 | $737,709 |
| September 30, 2024 | 990 | $1,186,159 | $1,462,247 | -$276,088 | $737,550 | $297,373 | $440,177 |
| September 30, 2023 | 990 | $1,186,918 | $1,175,177 | $11,741 | $992,517 | $302,430 | $690,087 |
Financial details: 990 for the year ended September 30, 2025
Revenue
- Contributions, gifts and grants
- $953,446
- Program service revenue
- $678,868
- Investment income
- $30,761
- Net gain from sales of assets
- $660
- Net income from sales of inventory
- -$2,174
- Other revenue
- $999
Expenses
- Grants and similar amounts paid
- $200,150
- Compensation of officers, directors and key employees
- $115,833
- Other salaries and wages
- $364,257
- Salaries, compensation and benefits (total)
- $518,487
- Professional fundraising fees
- $0
- Accounting fees
- $62,564
- Occupancy
- $198,347
- Travel
- $58,463
- Program services (functional)
- $1,020,502
- Management and general (functional)
- $345,962
- Fundraising (functional)
- $171,337
Balance sheet and other
- Total assets, start of year
- $737,550
- Total assets, end of year
- $1,126,037
- Total liabilities, end of year
- $388,328
- Net assets, end of year
- $737,709
- Land, buildings and equipment
- $22,500
- Publicly traded securities
- $945,486
- Net assets without donor restrictions
- $341,774
- Net assets with donor restrictions
- $395,935
- Gross unrelated business income
- $1,175
- Gross receipts
- $2,275,652
- Employees
- 40
- Volunteers
- 35
- Year formed
- 1972
- State of legal domicile
- NH
From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.
Officers, directors and key employees
As listed on the 990 for the year ended September 30, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| SETH BRENZEL | EXECUTIVE DIRECTOR Officer | 40 | $110,000 |
| PETER COLOHAN CHAIR THRU 725 | VICE CHAIR (START 7/25) Trustee or director, Officer | 1 | $0 |
| DANIELLE SCHINDLER CHEUNG | CHAIR (START 7/25) Trustee or director, Officer | 1 | $0 |
| JENNIFER WEIDMAN | VICE CHAIR (START 7/25) Trustee or director, Officer | 1 | $0 |
| DAVID ROBERTS | SECRETARY Trustee or director, Officer | 1 | $0 |
| STEPHEN SMITH | TREASURER Trustee or director, Officer | 1 | $0 |
| ANNE HAXO | DIRECTOR Trustee or director | 1 | $0 |
| DAVID BIVINS | DIRECTOR Trustee or director | 1 | $0 |
| DAVID KELLER | DIRECTOR Trustee or director | 1 | $0 |
| JAMIE HAMILTON | DIRECTOR Trustee or director | 1 | $0 |
| JOANN BALINGIT | DIRECTOR Trustee or director | 1 | $0 |
| JOHN TARRH | DIRECTOR (START 7/25) Trustee or director | 1 | $0 |
| KATE VALENTA | DIRECTOR Trustee or director | 1 | $0 |
| RACHEL BURDICK | DIRECTOR Trustee or director | 1 | $0 |
| SARAH STROUD | DIRECTOR Trustee or director | 1 | $0 |
2 more people on this return
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| SOLON SNIDER SWAY | DIRECTOR Trustee or director | 1 | $0 |
| TESSIE MCGOUGH | DIRECTOR Trustee or director | 1 | $0 |
990 for the year ended September 30, 2024: 19 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| SETH BRENZEL | EXECUTIVE DIRECTOR Officer | 40 | $100,000 |
| PETER COLOHAN | CHAIR Trustee or director, Officer | 1 | $0 |
| RITA MITRA | VICE CHAIR Trustee or director, Officer | 1 | $0 |
| DANIELLE SCHINDLER CHEUNG | VICE CHAIR Trustee or director, Officer | 1 | $0 |
| DAVID ROBERTS | SECRETARY Trustee or director, Officer | 1 | $0 |
| STEVE MESSNER | TREASURER Trustee or director, Officer | 1 | $0 |
| BOB BASSETT | DIRECTOR (THROUGH 7/2024) Trustee or director | 1 | $0 |
| JOANN BALINGIT | DIRECTOR Trustee or director | 1 | $0 |
| DAVID BIVINS | DIRECTOR (START 7/2024) Trustee or director | 1 | $0 |
| RACHEL BURDICK | DIRECTOR Trustee or director | 1 | $0 |
| JAMIE HAMILTON | DIRECTOR Trustee or director | 1 | $0 |
| ANNE HAXO | DIRECTOR Trustee or director | 1 | $0 |
| DAVID KELLER | DIRECTOR Trustee or director | 1 | $0 |
| TESSIE MCGOUGH | DIRECTOR Trustee or director | 1 | $0 |
| STEPHEN SMITH | DIRECTOR (START 7/2024) Trustee or director | 1 | $0 |
| SARAH STROUD | DIRECTOR Trustee or director | 1 | $0 |
| SOLON SNIDER SWAY | DIRECTOR Trustee or director | 1 | $0 |
| KATE VALENTA | DIRECTOR Trustee or director | 1 | $0 |
| JENNIFER WEIDMAN | DIRECTOR Trustee or director | 1 | $0 |
990 for the year ended September 30, 2023: 19 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| SETH BRENZEL | EXECUTIVE DIRECTOR Officer | 40 | $100,000 |
| PETER COLOHAN | CHAIR Trustee or director, Officer | 1 | $0 |
| RITA MITRA | VICE CHAIR Trustee or director, Officer | 1 | $0 |
| DANIELLE SCHINDLER CHEUNG | VICE CHAIR Trustee or director, Officer | 1 | $0 |
| DAVID ROBERTS | SECRETARY Trustee or director, Officer | 1 | $0 |
| STEVE MESSNER | TREASURER Trustee or director, Officer | 1 | $0 |
| BOB BASSETT | DIRECTOR Trustee or director | 1 | $0 |
| JOANN BALINGIT | DIRECTOR Trustee or director | 1 | $0 |
| LORING CAITLIN JR | DIRECTOR (THROUGH 7/2023) Trustee or director | 1 | $0 |
| CHRISTINE DOKKO | DIRECTOR (THROUGH 7/2023) Trustee or director | 1 | $0 |
| RACHEL FISSELL | DIRECTOR Trustee or director | 1 | $0 |
| JAMIE HAMILTON | DIRECTOR Trustee or director | 1 | $0 |
| ANNE HAXO | DIRECTOR Trustee or director | 1 | $0 |
| DAVID KELLER | DIRECTOR Trustee or director | 1 | $0 |
| TESSIE MCGOUGH | DIRECTOR (START 7/2023) Trustee or director | 1 | $0 |
| SARAH STROUD | DIRECTOR Trustee or director | 1 | $0 |
| SOLON SNIDER SWAY | DIRECTOR (START 07/2023) Trustee or director | 1 | $0 |
| KATE VALENTA | DIRECTOR Trustee or director | 1 | $0 |
| JENNIFER WEIDMAN | DIRECTOR Trustee or director | 1 | $0 |
Address and contacts
- Address (IRS master file)
- 7 JOOST AVENUE 204, SAN FRANCISCO, CA 94131-3272
- In care of
- % SETH BRENZEL
- Principal officer (990 for 2024)
- SETH BRENZEL, 7 JOOST AVENUE 204, SAN FRANCISCO, CA 94131
- Signed the 990
- SETH BRENZEL, EXECUTIVE DIRECTOR
- Phone
- (415) 587-8157
- Website
- WWW.WALDENSCHOOL.ORG
- Return prepared by
- BAKER TILLY ADVISORY GROUP LP
California records
California keeps its own records of charities and corporations. Search them by EIN 35-2374612 or by the name WALDEN SCHOOL.
- Attorney General, Registry of Charities and Fundraisers
- Registration status and filed reports (CT-TR-1, RRF-1)
- Secretary of State, bizfile Online
- Corporation status, entity number, agent for service
- Franchise Tax Board
- Entity status letter (state tax exemption, good standing)
Mission
THE WALDEN SCHOOL INSPIRES ARTISTIC EXPRESSION AND PERSONAL GROWTH THROUGH EXPERIENTIAL MUSIC PROGRAMS.
Program accomplishments
- THE WALDEN SCHOOL YOUNG MUSICIANS PROGRAM PROVIDES AN UNPARALLELED CREATIVE SUMMER EXPERIENCE FOR MUSICALLY INCLINED STUDENTS AGES 9 TO 19. PART SCHOOL, PART CAMP, AND PART FESTIVAL, THE PROGRAM CONVENES EACH SUMMER FOR FIVE WEEKS IN DUBLIN, NH. THROUGH RIGOROUS AND INNOVATIVE DAILY INSTRUCTION, STUDENTS HONE THEIR MUSICAL AND CREATIVE SKILLS WITHIN A SUPPORTIVE COMMUNITY OF LIKE-MINDED PEERS AND MENTORS.Expenses $785,823 · grants $176,700 · revenue $531,272
- THE WALDEN SCHOOL CREATIVE MUSICIANS RETREAT (CMR) OFFERS TRAINING AND DEVELOPMENT OPPORTUNITIES FOR THE WELL-ROUNDED MUSICIANS (AGES 18+). AT THE CREATIVE MUSICIANS RETREAT (CMR), PARTICIPANTS TAKE CLASSES (INCLUDING COURSES IN THE WALDEN SCHOOL'S MUSICIANSHIP COURSE), SING IN THE CHORUS, WRITE MUSIC, AND IMPROVISE. PARTICIPANTS ARE EXPOSED TO A VARIETY OF WALDEN MUSICIANSHIP MATERIALS, INCLUDING ACOUSTICS, DRILLS WITH INTERVALS AND TRIADS, RESOLVING STRUCTURES, RHYTHMS, SOLFEGE AND HARMONIC ANALYSIS. CLASSES ALSO INCLUDE TOPICS IN CONTEMPORARY MUSIC AND COMPUTER MUSIC. COMPOSITION LESSONS AND MASTER CLASSES ARE OFFERED.Expenses $202,476 · grants $23,450 · revenue $147,596
- THE WALDEN SCHOOL'S MUSICIANSHIP COURSE ENCOURAGES STUDENTS TO USE THE MATERIALS THEY STUDY TO CREATE IMPROVISATORY WORKS AND ORIGINAL COMPOSITIONS. THE METHOD NOT ONLY ENHANCES STUDENTS' MUSICAL SKILLS, BUT ALSO DEVELOPS A SENSE OF CREATIVE INDIVIDUALITY IN EXTRA-MUSICAL PURSUITS.Expenses $14,647
- DURING 2025, WE CONTINUED A PILOT OF THE MEMPHIS COMPOSERS INSTITUTE. WE ARE HOPING TO MAKE THIS A MORE PERMANENT, ON-GOING PROGRAM OFFERING OF THE WALDEN SCHOOL, IN PARTNERSHIP WITH THE MEMPHIS SYMPHONY ORCHESTRA AND UNIVERSITY OF MEMPHIS. WE HAD MORE THAN 100 PEOPLE PARTICIPATE AS STUDENTS, COMPOSERS, AUDIENCE MEMBERS, AND PERFORMERS DURING THIS YEAR'S INSTITUTE, AND WE HOPE TO GROW THIS IN FUTURE YEARS TO HAVE A MUCH LARGER AUDIENCE. - $9,484THE WALDEN SCHOOL HOSTS VARIOUS ALUMNI EVENTS THROUGHOUT THE YEAR, DESIGNED TO CONNECT ALUMNI TO RETAIN A VIBRANT CONNECTION TO THE ORGANIZATION. - $8,072Expenses $17,556
What it must file and when
IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in September, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | September 30, 2026 | February 16, 2027 | Not due yet |
| 2024 | September 30, 2025 | February 17, 2026 | 990 on file |
| 2023 | September 30, 2024 | February 18, 2025 | 990 on file |
IRS record
- EIN
- 35-2374612
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- School
- Donations deductible (Pub 78)
- Public charity, 50% deduction limit
- Exempt since
- 2010
- Accounting year ends
- September
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Arts, culture and humanities (A6E)
- Assets (IRS master file)
- $1,126,037
- Income (IRS master file)
- $2,275,652
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | September 2025 | $1,664,074 | $1,537,801 | $1,126,037 | XML |
| 990-T | September 2025 | – | – | – | IRS |
| 990 | September 2024 | $1,186,159 | $1,462,247 | $737,550 | XML |
| 990-T | September 2024 | – | – | – | IRS |
| 990 | September 2023 | $1,186,918 | $1,175,177 | $992,517 | XML |
| 990 | September 2022 | $1,451,099 | $1,059,115 | $879,304 | IRS |
| 990 | September 2021 | – | – | – | IRS |
| 990 | September 2020 | – | – | – | IRS |
| 990 | September 2019 | – | – | – | IRS |
990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 35-2374612).
Questions about WALDEN SCHOOL
- What is the EIN of WALDEN SCHOOL?
- The employer identification number (EIN) of WALDEN SCHOOL is 35-2374612.
- Is WALDEN SCHOOL tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2010.
- Are donations to WALDEN SCHOOL tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does WALDEN SCHOOL file?
- Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
- When is the next return of WALDEN SCHOOL due?
- The return for tax year 2025 (the year ending September 30, 2026) is due February 16, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did WALDEN SCHOOL last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended September 2025.
- Who is the principal officer of WALDEN SCHOOL?
- The 990 for the year ended September 30, 2025 names SETH BRENZEL.
- Who are the officers and directors of WALDEN SCHOOL?
- The 990 for the year ended September 30, 2025 lists 17 people; 1 received compensation from the organization, the highest $110,000 (SETH BRENZEL, EXECUTIVE DIRECTOR).
- How much revenue does WALDEN SCHOOL have?
- On its 990 for the year ended September 30, 2025 it reported revenue of $1,664,074, expenses of $1,537,801 and total assets of $1,126,037 at year end.
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