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Academic year 2026–2027

All-in-one school management software. One price, every feature.

Students, classes, attendance, guardian communication, meetings, updates, fees and class schedules — all in one platform, with every feature in every package.

Unlimited users No feature tiers Greek & English Data stays in the EU
14 features

in every package: students and classes, class schedules, attendance, activities and comments, announcements, messages, notifications, daily updates, parent meetings, fees, documents, photo and video gallery, branches, Excel export.

2 weeks

at most, from signing to setup, training and your first day of attendance. We will ask for your school details, your term dates and Excel files of students, guardians, teachers and classes.

10 places

for the first private schools: 25% off your package for the first two years, and setup starting from €100.

Founding Schools

Everything included

Everything your school needs, in one place

Every school on Tetradio gets the same system. Packages differ only in how many students they cover.

Students & classes

Enrollment, class lists, schedules and teacher assignments, kept in one record per student.

  • One record from enrollment to leaving
  • Parents and guardians connected for instant updates
  • Schedules per class and per teacher
  • Required documents and forms per student

Attendance

Attendance on any device, per class and per day, with excused and unexcused absences.

Communication

Announcements, direct messages between guardians and teachers, and comments under activities, all logged and accessible in the student’s record.

Activities

Keep track of activities. See the shared files and comments under each activity.

Fees & payments

Payments, installment plans and outstanding balances per family, in one ledger kept in sync with parents. Guardians send proof of payment from their phone and the office confirms it.

Parent & staff app

Guardians see attendance, activities and payments. Teachers take attendance and update activities from the same app. It installs from the browser on any phone, with notifications you can switch on.

Pricing

Choose your package by student number

Every tier has the same features. You are choosing capacity, not capability.

Core

up to 80 students

€499

per year≈ €0.52 per student per month, when full

+VAT per year
Most schools

Grow

up to 150 students

€999

per year≈ €0.56 per student per month, when full

+VAT per year

Scale

up to 300 students

€1,999

per year≈ €0.56 per student per month, when full

+VAT per year

Pro

up to 400 students

€2,999

per year≈ €0.62 per student per month, when full

+VAT per year

Prices exclude VAT. You can go 10% over your band before anything changes. Past that you move up and pay the difference for the months remaining — never a full second year. Setup is a one-off fee, paid once at the start and never again: €190 for Core, €290 for Grow, €390 for Scale and €490 for Pro.

Smaller school? Not a problem. Under 40 students, Solo gives you the same system for €299 a year.
See Solo

Cost calculator

What will it cost your school?

Enter your number of students. You see your package, the one-off setup fee and the subscription, annual or monthly.

Billing

Enter your number of students to see your package and cost.

Prices exclude VAT.

Starting with the 14-day trial? You pay nothing up front. The setup fee and the subscription are charged only if you continue after the 14 days.

How your package works

Grow mid-year, pay pro rata

You can go 10% over your band without paying anything extra. Past that, you move up and pay only the difference for the months left on your term.

Shrink at renewal

If your numbers fall, your package falls with them at the next renewal. No penalty, no negotiation.

Your price holds for the period you pay for

An annual subscription keeps its price for the year, a monthly one for the month. Prices may be revised once a year, and we tell you at least 60 days before a new price applies to you. Feature releases never change it.

Small schools

Small school? You should not pay like a big one.

Under 40 students, the four packages above are the wrong size for what you would pay per student. Solo is the same system at a size that fits.

Solo — €299 per year

Up to 40 students. Every feature, no reduced version, no seat limit on staff accounts. Setup €150, paid once.

Move up when you outgrow it

Go past 40 and you have 10% of headroom before anything changes. Past that you move to Core on the pro rata rule, and your data comes with you untouched.
Solo is for single-site schools and tutoring centers. It is not a trial and it does not expire.
Not sure Solo is the right fit?
Tell us your student number and we will confirm the package in one reply.

Getting started

How setup works

Most schools arrive with data in spreadsheets and an old system still running. We move it across with you — every school starts this way.

We set it up with you

We import your students, classes and fee plans, configure the year calendar and train your staff. Up to two weeks, for a fixed fee by package, paid once.

What you bring

Your student and guardian list, your classes and your fee plans, in whatever form you already keep them. You do not need to tidy them first.
Any of these formats works:
xlsxlsxcsv
Setup is how every school starts, including schools on the trial. We always do it with you.
Send us your data and we will tell you what setup includes and what it costs.
We review your file and come back with a plan and a timeline. Setup is a one-off fee by package, €150 to €490, paid once and never again.

Setup — up to two weeks

What setup actually includes

Guided setup is a defined piece of work, not an open-ended consulting engagement.
1

Data import

Students, guardians and classes brought in from your spreadsheets or previous system.
2

Configuration

Year calendar, class structure, fee plans and notification rules set to how your school already works.
3

Staff training

Two sessions: one for administrators, one for teachers. Recorded so new staff can watch them later.
4

Go live

We stay on hand through your first full week of attendance, activities and parent messages.
Ready to start setup?
Tell us your term dates and we will put a plan of up to two weeks against them.

Gallery

Photo and video storage

The gallery is for sharing moments between school and families during the year, not for long-term archiving. The school collects the guardians’ consent before sharing photos and videos.

3 GB

Media storage per school

Enough for about 3,000 photos. Photos are resized to 2000 px when uploaded, so a phone photo takes well under 1 MB; the original file is not kept.

100 MB

Per video, MP4

MP4 files up to 100 MB each, roughly one minute of 1080p footage. 3 GB holds about 30 minutes of video in total, so short clips go a long way; keep them at 1080p rather than 4K.

Photos and videos are restricted, not just stored

Your files stay private to your school, and inside your school access is controlled per class and per album.
  • Private by class Class A never sees Class B's photos unless they are explicitly allowed to.
  • Shared albums for events School parties, trips and ceremonies can be shared across every class in the school.
  • Per-file permissions Every photo and video carries its own access rule, whichever album it sits in.
At the start of each school year, the school decides what happens to the albums of previous years.

Annual or monthly — your choice

Recommended

Annual

One invoice for the school year, aligned to your budget cycle.

  • Two months free against monthly
  • One invoice, one purchase order
  • Price held for the full year
2 months free You pay for ten, you get twelve. The discount is the two months, not a percentage off.

Monthly

Pay as you go, with no commitment beyond the current month.

  • Cancel at the end of any month
  • Same features, same support
  • Switch to annual whenever you like
If you stop and come back within 30 days, there is a reactivation fee of two months’ subscription or €150, whichever is higher. After 30 days your data is deleted for good, and the last backup copies within 7 days after that — we cannot hold it longer, and coming back means setting the school up from scratch.
Have questions, or can't decide what works best for you?
Read the billing FAQ

Annual or monthly — common questions

Twelve answers on how billing actually works.

What exactly do I save by paying annually?

Two months. You pay for ten and you get twelve. It is not a percentage discount, it is two months of the same service at no charge.

Can I try the app before deciding?

Yes, for 14 days, on your own school. The 45-minute demo shows the system on sample data; the trial is the real thing — your classes, your teachers, your parents.

To run it we set your school up first — records imported, classes and fees configured, staff trained. That work is covered by the setup fee, but we charge it only if you decide to stay. If you do not continue, you pay nothing: not the setup, not the 14 days.

Near the end we remind you. Carry on and you pick a package; the setup fee goes on your first invoice and everything is kept as it is. If you do not, the workspace goes into maintenance mode for a week and is then permanently deleted. Nobody can sign in during that week, but if you want your records, ask and we will send them to you before they are deleted. The last backup copies are gone within 7 days after that.

That is not a penalty, it is protection. The records are about children, and under data protection law (GDPR) we may keep personal data only for as long as there is a reason to. Once you decide not to continue, all data relating to you must be deleted.

Do I pay for July and August, when the school is closed?

Yes. Tetradio runs twelve months a year so that you and your students' parents can use it at any time. Technical support is available year-round too.

It works like your rent and your utilities: you pay for electricity, internet and telephone even in the months you are not open.

Schools work the same way. Annual tuition is not reduced if a child spends June with their grandparents, and you do not charge half tuition at Easter or Christmas, because the costs the tuition was calculated from carry on regardless.

Can I cancel a monthly subscription at any time?

Yes. Monthly carries no commitment beyond the current month. You stop at the end of any month with no penalty and no notice period.

What happens if I stop and want to come back?

Your data is kept for 30 days after you cancel. Come back within that window and there is a reactivation fee of two months’ subscription, or €150 if that is higher, and you pick up exactly where you left off.

After 30 days the workspace and everything in it is deleted, and the last backup copies within 7 days after that. That is a data protection obligation, not a policy we can waive on request — we hold personal data about children only for as long as there is a reason to, and once the subscription is over there is none. Returning after that is a new subscription, with setup, and the records have to be imported again.

Can I switch from monthly to annual mid-year?

Whenever you like. We move you onto the annual term from the date you switch, and the two free months apply to that term.

Do the two plans have different features?

No. Same system, same support, same storage. Billing frequency is the only difference between them.

What if my student number crosses a band mid-year?

You have 10% of headroom above your band before anything changes. Past that you move up and pay the difference for the months remaining on your term, never a full second year. On monthly, your next invoice reflects the new band.

If my numbers fall, does my price fall?

At renewal, yes. Nothing changes mid-term in either direction — your package follows your student number at each renewal, with no penalty and no negotiation.

Is my annual price locked?

An annual subscription keeps its price for the year, a monthly one for the month. Prices may be revised once a year, and we tell you at least 60 days before a new price applies to you. Feature releases never change it.

How is VAT handled?

Every price on this page excludes VAT. It is added on the invoice, on both annual and monthly.

How much photo and video storage do we get?

3 GB per school, on every package. Enough for about 3,000 photos. Photos are resized to 2000 px when uploaded, so a phone photo takes well under 1 MB; the original file is not kept.

Video: MP4 files up to 100 MB each, roughly one minute of 1080p footage. 3 GB holds about 30 minutes of video in total, so short clips go a long way; keep them at 1080p rather than 4K.

The gallery is for sharing moments between school and families during the year, not for long-term archiving. The school collects the guardians’ consent before sharing photos and videos. At the start of each school year, the school decides what happens to the albums of previous years.

Limited — first cohort

Founding Schools Program

€100

Guided setup, starting price

25% off

Your package, for the first two years

Direct line

To the team building the product

The program is for the first ten Greek private schools to sign. In return we ask for honest feedback and permission to name you as a reference.

Closing at ten schools Once the cohort is full, these prices and discounts no longer apply.
Founding terms stay fixed for two years. Schools that join after the first ten pay the standard rate and the standard setup fee.

Referrals

Recommend Tetradio, get a month

The most common way a school finds us is through another school. We would rather pay you for that than pay for advertising.

You get

One month credited on your next renewal.

They get

One month free on their first year.
Credited once their first invoice is paid. Up to five schools per year.

See it running before you decide

A demo of about 45 minutes on realistic sample data for a modern school. No commitment and nothing to install.
Book a demo