VidyaOS Demo School (not a real school)Since 1984 · Rohini, New Delhi— home
Latest
  • NewAdmissions for Nursery to Class IX open until 28 February
  • Half-yearly examination timetable published for Classes VI–XII
  • Winter break: 1 January to 10 January. School reopens on 11 January
  • Annual Sports Day — 14 December, Main Ground, 8:00 a.m.

VidyaOS Demo School (not a real school)Home

Students of St Mary’s together in the school courtyard
The 400 m final on sports day
The main block and the flag court
The library reading room

Affiliated to CBSE, New Delhi — Affiliation No. 2730123

Established 1984

A school where children are known by name

Forty-one years in Rohini, 1,240 students, and an average class size of 31. We teach the CBSE curriculum without pretending it is anything else, and we tell parents the truth about how their child is doing.

Play campus filmVidyaOS Demo School (not a real school) (opens in a new tab)

Why here

What is different here

Four things you can check against our disclosure page before you visit, rather than four things every school claims.

18:1
pupil–teacher ratio

Against the CBSE ceiling of 30:1. No section has exceeded 34 students in six years, and the figure is republished every quarter.

41 of 68
teachers here over eight years

Median teaching experience is twelve years. Your child is unlikely to change class teacher mid-year.

₹0
development charge

Every head, every class, published on this website. No charge appearing in March and no compulsory book set from a single vendor.

est. 1984
in Sector 11, Rohini

Four acres, built out in stages. The 1984 block still houses the junior wing.

Facilities

The campus

Four acres in Sector 11, built out in stages since 1984.

A student at the chemistry bench

Science laboratories

Separate physics, chemistry and biology laboratories, each seating thirty-two, with a timetabled practical every week from Class VI upward.

The library reading room

Library

Around 14,000 volumes, forty reading seats, and a librarian on duty through the school day. Every class from I to VIII has a timetabled library period.

The computer laboratory during a Class IX practical

Computer laboratory

Forty-eight workstations on a wired network, one per student for Classes VI to XII. Replaced in 2024.

The playing field and the courts

Playing field and courts

A 200-metre track, one football and two basketball courts, and a covered area used through the monsoon.

See all 6 facilities
1,240studentsacross 38 sections, Nursery to Class XII
13,400library issuestaken out last year — eleven books per child
2,75,000₹ in fee concessionsto nine families this session, decided by a committee of three parents
92per cent attendancethe school median across the year, including the monsoon weeks

Our toppers

The Class of 2026

Twelve of the 243 candidates who sat the board examinations. Every figure below matches our Mandatory Public Disclosure page, because an inspector will compare them.

  • Meher Kaur
    99.0%
    Class X · School topper
  • Ananya Iyer
    98.6%
    Class XII · Science (PCM) · School topper
  • Arjun Nair
    98.4%
    Class X
  • Rohan Mehta
    98.2%
    Class XII · Science (PCB)
  • Diya Sharma
    98.2%
    Class X
  • Kavya Reddy
    97.8%
    Class XII · Commerce
  • Vivaan Joshi
    97.6%
    Class X
  • Aditya Rao
    97.4%
    Class XII · Science (PCM)
  • Sara Qureshi
    97.4%
    Class X · Mathematics · Subject topper
  • Ishita Bose
    97.2%
    Class XII · Humanities · District rank 4
  • Neel Bhatt
    97.0%
    Class X
  • Kabir Anand
    96.8%
    Class XII · Commerce

As declared by CBSE. Published with each family’s written consent, which we hold on file.

All results

Academics

What we teach, and when

Nursery through Class XII, on the CBSE curriculum.

Pre-primary

Nursery to UKG · Ages 3–5 years

Three years of play-led learning in rooms with no more than twenty-four children and two adults. Reading readiness rather than reading, numbers up to twenty, and a great deal of time outdoors.

Primary

Classes I–V · Ages 6–10 years

English, Hindi, Mathematics, Environmental Studies and Computer Awareness, with weekly art, music and games periods that are not surrendered to revision. Formal examinations begin in Class III.

Middle

Classes VI–VIII · Ages 11–13 years

Science splits into physics, chemistry and biology with a timetabled practical each week. Sanskrit is introduced as the third language, and every student takes part in one house activity per term.

Secondary

Classes IX–X · Ages 14–15 years

The CBSE board course, with a subject-choice conversation in Class IX rather than a stream allocation announced in Class X. Remedial periods run after school four days a week, at no additional charge.

Senior secondary

Classes XI–XII · Ages 16–17 years

Science, Commerce and Humanities streams. Class sizes fall to around twenty-eight, and each student is assigned a subject mentor who meets their parents twice a term.

Destinations

Where the Class of 2025 went

Every destination below is a place a student of ours actually enrolled at, not a place one was offered.

  • IIT Delhi ×3
  • AIIMS New Delhi ×2
  • NIT Kurukshetra ×4
  • Shri Ram College of Commerce ×6
  • Lady Shri Ram College ×5
  • Hindu College ×7
  • NLU Delhi ×2
  • Manipal Institute of Technology ×4
  • Christ University ×3
  • Delhi Technological University ×5

Admissions actually taken, not offers received. We keep a copy of every letter.

Coming up

What is coming up

Examinations, meetings and the things worth taking a morning off for.

Parent–teacher meeting, Classes VI–VIII

Fifteen minutes per child, by appointment. Book your slot through the parent portal; walk-ins are seen after 12.30 p.m. if a slot is free.

10:00 am · Middle school block

Admission test, Classes VI to IX

English, Mathematics and General Science, ninety minutes. Bring the admit card and a photograph. There is no interview for any class.

11:00 am · Examination hall

Sports day

Track events from 7.30 a.m., house relays after the break, prize-giving by 12.30 p.m. Parents are welcome on the east stand.

8:00 am · Main ground

Founder’s Day and the school’s forty-second year

Assembly at 8 a.m., followed by the alumni lunch. The 1986 batch is organising this year and has asked for a cricket match.

9:00 am · Quadrangle

The full calendar

Our promises

Four things we promise

These are not aspirations. If any of them is not honoured, write to the Principal and we will answer in writing.

We do not take donations

No capitation fee, no building fund, no “voluntary” contribution at any stage of admission. The fee structure on this website is the entire amount you will pay.

We do not interview children

Nursery admission is by draw of lots, conducted in front of parents. From Class I upwards there is a written test in English, Mathematics and Science, and nothing else.

We do not nominate a bookseller

The book list names the publisher and edition. Buy them wherever you like, including second-hand.

We publish results in full

Including the students who did not clear at the first attempt, and the registered count beside the passed count — not the pass percentage on its own.

principal@stmarysdelhi.example — every message is answered within two working days.

Faculty

Who teaches your child

Grouped the way the board counts them — administration first, then post-graduate, trained graduate, primary and nursery teachers. The subject each one teaches is beside their name.

  • 20 PGT
  • 28 TGT
  • 20 PRT
  • 1 Special educators
  • 2 Counsellors
  • 1 Wellness teachers
  • 68 Teaching staff

Administration

1 teacher
  • Shobha MenonHeadmistress, Junior WingClasses I to VM.A. (Education), B.El.Ed.

Post-graduate teachers (PGT)

5 teachers
  • Sunita RaghavanPGT, Mathematics (Head of Department)Mathematics — Classes XI and XIIM.Sc. (Mathematics), B.Ed.
  • Arun KhannaPGT, PhysicsPhysics — Classes XI and XIIM.Sc. (Physics), B.Ed.
  • Kavita DeshmukhPGT, ChemistryChemistry — Classes XI and XIIM.Sc. (Chemistry), M.Ed.
  • Rajesh PillaiPGT, Computer Science (Head of Department)Computer Science, Informatics PracticesM.C.A., B.Ed.
  • Meenakshi IyerPGT, EnglishEnglish Core, English ElectiveM.A. (English), B.Ed.

Trained graduate teachers (TGT)

1 teacher
  • Imran SheikhTGT, Social ScienceHistory and Civics — Classes VI to XM.A. (History), B.Ed.

Primary teachers (PRT)

1 teacher
  • Sarita BhattPRT, Classes I to VEnglish and Environmental Studies — Classes I to VB.El.Ed., B.A. (English)

Nursery teachers (NTT)

1 teacher
  • Rukhsana AliNTT, Pre-primaryNursery and KindergartenN.T.T., B.A. (Psychology)

Other teaching staff

3 teachers
  • Vikram ChandraDirector of SportsPhysical Education — all classesM.P.Ed., NIS (Athletics)
  • Nandita BoseSpecial EducatorIndividual education plans, Classes I–VIIIM.A. (Psychology), Dip. in Special Education
  • Lalita PrasadCounsellorCounselling, Classes VI to XIIM.Phil. (Clinical Psychology), RCI registered

Gallery

The year so far

Photographs from assembly, sports day and the annual function.

A classical dance performance at the annual day
Annual day: the junior wing finale
The house march-past
The house march-past
Folk dance at the cultural evening
Folk dance at the cultural evening
Parents and students at the annual function
Parents at the annual function
The 400 m final on sports day
The 400 m final
Students after the house relay
After the house relay
The inter-house football final
The inter-house football final
Morning drill on the assembly ground
Morning drill
The whole gallery

Parents

What families say

Sent to the office unprompted, and printed with the writer’s permission.

What convinced me was that the class teacher rang me in the second week of Class VI to say my son was struggling with the new science format. Nobody had ever rung me from his previous school except about fees.
Sunita Rao · Parent · Class VI
The library period is real. It is on the timetable and it does not get taken for extra maths before the exams, which is what happened at my cousin’s school.
Ishaan Mehta · Student · Class X
They told us at the admission interview that there is no admission interview. I did not believe it until the draw of lots, which we watched.
Farida Qureshi · Parent · Nursery
I left in 2011 and came back to teach in 2019. Three of my own teachers were still here. That tells you something about the place that a brochure cannot.
Priya Nair · Alumnus · Class XII · now teaches Chemistry here

Admissions for 2027⁠–⁠28 close on 28 February

Nursery to Class IX. The form is free, the registration fee is ₹500, and the fee structure for every class is published on this site before you apply.