2026-02-03T15:57:52-05:00 2025-06-30 472399509 WORTHINGTON HUGHES & HOAR PC 400 W CUMMINGS PARK STE 3000 WOBURN MA 018016592 990 2024-09-01 042499107 THACHER MONTESSORI SCHOOL INC THAC 6173612522 1425 BLUE HILL AVENUE MILTON MA 02186 CARL TREICHEL CHAIR 6173612522 2026-01-29 true true ANTHONY F CARUSO P01286664 7813053534 2026-02-02 2024 2025-03-06 01:10:19Z MICHELLE SEYLLER 1425 BLUE HILL AVENUE MILTON MA 02186 3819011 false X WWW.THACHERSCHOOL.ORG X 1971 MA TO PROVIDE A DIVERSE, COLLABORATIVE LEARNING COMMUNITY. THROUGH THE MONTESSORI METHOD, WE EMBRACE EACH CHILD'S UNIQUE POTENTIAL AND CULTIVATE A PASSION FOR DISCOVERY. 6 5 65 15 0 78138 62348 3346296 3303517 49287 70921 9194 10311 3482915 3447097 451350 337500 0 2884413 2254738 0 77557 828531 751113 4164294 3343351 -681379 103746 6576356 6673266 2845035 2626724 3731321 4046542 TO PROVIDE A DIVERSE, COLLABORATIVE LEARNING COMMUNITY. THROUGH THE MONTESSORI METHOD, WE EMBRACE EACH CHILD'S UNIQUE POTENTIAL AND CULTIVATE A PASSION FOR DISCOVERY. false false 2294308 337500 3303517 WE EMPOWER CHILDREN TO ACHIEVE ACADEMIC EXCELLENCE AND BECOME CONFIDENT, COMPASSIONATE, AND PROACTIVE MEMBERS OF THE WORLD COMMUNITY. PROVIDING INDEPENDENT EDUCATIONAL SERVICES TO APPROXIMATELY 115 STUDENTS, WITH APPROXIMATELY 33 RECEIVING FINANCIAL AID, PRE-SCHOOL THROUGH EIGHTH GRADE, ON A RACIALLY NONDISCRIMINATORY BASIS USING THE MONTESSORI EDUCATIONAL METHOD. 2294308 true true false false false false false false false true true false false false false false true false true false false false false false false false false false true true false false false false false true false false false false false false false false false false false true 13 0 true 65 true false false false false false false false false false false false false false false X 6 5 false false false false false false false true true false false true true true true true true true true false MA X VICKY VARNUM 6173612522 1425 BLUE HILL AVENUE MILTON MA 02186 MICHELLE SEYLLER HEAD OF SCHO 40.00 X 163349 0 7738 VICKY VARNUM BUSINESS MAN 40.00 X 88008 0 8840 CARL TREICHEL CHAIR 2.00 X X 0 0 0 RICHARD SAUL TREASURER 2.00 X X 0 0 0 JEREMY ANGOFF CLERK 2.00 X X 0 0 0 NEIL DIMAIO TRUSTEE 2.00 X 0 0 0 MICHELLE BRITO TRUSTEE 2.00 X 0 0 0 ELIZABETH LAZAR TRUSTEE 2.00 X 0 0 0 DEBA DUNN FORMER HEAD X 200740 0 24261 452097 40839 2 true true false 62348 62348 TUITION AND RELATED FEES 611600 3303517 3303517 3303517 51169 51169 391666 371914 19752 19752 19752 MISCELLANEOUS REVENUE 10311 10311 10311 3447097 3313828 70921 337500 337500 270735 223085 47650 1691747 1302579 381508 7660 81170 60331 18567 2272 48230 35926 11013 1291 162856 121310 36988 4558 2074 2074 22985 22985 12412 12412 10440 9165 1275 24863 3036 21827 49800 17245 32552 3 117420 77937 36174 3309 155315 103089 47849 4377 23122 20304 2818 60499 40156 18638 1705 126027 83649 38826 3552 41856 27781 12895 1180 CONTRIBUTION RETURNED 50000 50000 EDUCATIONAL MATERIALS 36540 36540 FIELD TRIPS & ENRICHMENTS 17760 17760 3343351 2294308 971486 77557 197211 289962 236784 549586 9825 122048 43923 47333 6793475 3822225 3097277 2971250 2991336 2693087 6576356 6673266 299310 256957 863405 737237 1682320 1632530 2845035 2626724 X 3419283 3775120 312038 271422 3731321 4046542 6576356 6673266 103746 211475 X false true X true false X RESTRICTED RESTRICTED RESTRICTED RESTRICTED RESTRICTED RESTRICTED RESTRICTED RESTRICTED 357373 -50000 49530 5431 351472 277855 79518 357373 200718 50000 27137 277855 50000 150000 718 200718 50000 50000 0.75000 0.25000 false false 325004 325004 5896379 3417515 2478864 316102 203637 112465 255990 201073 54917 2971250 3258660 211475 211475 3047185 12412 387500 399912 3447097 2943439 2943439 12412 387500 399912 3343351 SCHEDULE D, PAGE 2, PART V, LINE 4 TO PROVIDE TUITION ASSISTANCE IN ORDER TO FACILITATE ACCESS TO THE SCHOOL FOR CHILDREN AND FAMILIES WITH LIMITED SOCIO-ECONOMIC MEANS SCHEDULE D, PAGE 4, PART XI, LINE 4B FINANCIAL AID AND SCHOLARSHIP AWARDS 337,500 CONTRIBUTION RETURNED TO DONOR 50,000 SCHEDULE D, PAGE 4, PART XII, LINE 4B FINANCIAL AID AND SCHOLARSHIP AWARDS 337,500 CONTRIBUTION RETURNED TO DONOR 50,000 true true true true true true true false false false false false false false false false false true SCHEDULE E, LINE 3 THE SCHOOL PUBLICIZES ITS NONDISCRIMINATORY POLICY THROUGH LOCAL NEWSPAPERS ON AN ANNUAL BASIS. false FINANCIAL AID 33 337500 FMV FINANCIAL AID SCHEDULE I, PAGE 4, PART IV THE SCHOOL AWARDS FINANCIAL AID AND SCHOLARSHIPS TO STUDENTS AND FAMILIES BASED ON NEED, ON A RACIALLY NON-DISCRIMINATORY BASIS. X X X X X false false false false false false false false false MICHELLE SEYLLER HEAD OF SCHOOL 163125 224 7341 397 171087 DEBA DUNN FORMER HEAD OF SCHL 200740 9542 14719 225001 BOARD OF TRUSTEES TRUSTEES 27700 TUITION/FEES false JEREMY ANGOFF TRUSTEE 68065 CONSULTING false SCHEDULE L, PART V TUITION AND FEES EARNED FROM OFFICERS AND TRUSTEES, NET OF FINANCIAL AID AWARDED, FOR THE TEN-MONTH PERIOD ENDED JUNE 30, 2025, WAS APPROXIMATELY 27,700. THERE ARE NO AMOUNTS RECEIVABLE FROM OFFICERS AND TRUSTEES AS OF JUNE 30, 2025. CONTRACT LIABILITIES (ADVANCE TUITION PAYMENTS) FROM OFFICERS AND TRUSTEES TOTALED APPROXIMATELY 4,000 AS OF JUNE 30, 2025. IN JUNE 2024, THE ORGANIZATION CONTRACTED WITH AN INFORMATION TECHNOLOGY CONSULTING FIRM WHICH IS OWNED AND CONTROLLED BY A MEMBER OF THE ORGANIZATION'S BOARD OF TRUSTEES. THE CONFLICT OF INTEREST WAS DISCLOSED TO, AND APPROVED BY, THE BOARD OF TRUSTEES. FEES PAID TO THIS INFORMATION TECHNOLOGY CONSULTING FIRM TOTALED 68,065 DURING THE TEN-MONTH PERIOD ENDED JUNE 30, 2025. FORM 990, PAGE 6, PART VI, LINE 11B A COPY OF THE 990 IS PROVIDED TO THE FULL BOARD OF DIRECTORS AND IS THOROUGHLY REVIEWED BEFORE IT IS FILED. FORM 990, PAGE 6, PART VI, LINE 12C ALL BOARD MEMBERS AND OFFICERS ARE REQUIRED TO COMPLETE A CONFLICT OF INTEREST FORM ANNUALLY. FORM 990, PAGE 6, PART VI, LINE 15A THE HEAD OF SCHOOL HAS A THREE YEAR CONTRACT. UPON RENEWAL, A COMPARATIVE SALARY STUDY IS CONDUCTED BY THE BOARD. THE INCREASE DURING THE FIRST TWO YEARS IS CONSISTENT WITH ALL EMPLOYEES AND IS BASED UPON THE COST OF LIVING PERCENTAGE DETERMINED BY THE SOCIAL SECURITY ADMINISTRATION. FORM 990, PAGE 6, PART VI, LINE 15B KEY EMPLOYEE COMPENSATION IS BASED UPON A COMPARATIVE SALARY STUDY PERFORMED BY THE BOARD DURING THE INITIAL HIRING. COST OF LIVING ADJUSTMENTS ARE MADE EVERY YEAR THEREAFTER, THE AMOUNT OF WHICH IS DETERMINED BY THE SOCIAL SECURITY ADMINISTRATION. FORM 990, PAGE 6, PART VI, LINE 19 THE SCHOOL'S GOVERNING DOCUMENTS, FINANCIAL STATEMENTS, AND CONFLICT OF INTEREST POLICY ARE AVAILABLE TO THE PUBLIC UPON REQUEST.