Coding Classes in Rijswijk | Modern Age Coders

Course picks for Rijswijk

Four courses for the town between The Hague and Delft

A child in the Bomenbuurt making a game that loads levels from a file, a teenager in Te Werve building an app on a public weather service, a student in Oud-Rijswijk whose project broke when a library updated, and an adult at work in the Plaspoelpolder whose reports depend on another team's data feed. For each of them the first lesson is free.

Ages 8 to 12

Game Development for Kids

Games that read their levels from a file with an agreed format, so a child learns what happens when the format changes.

See the syllabus

Ages 13 to 18

App Development for Teens

Apps built on real outside services, with the agreed request and response checked by tests before anything ships.

See the syllabus

College and adult

Python Automation Course

Designing and versioning APIs in Python, pinning dependencies and AI model versions, and handling change without breaking users.

See the syllabus

Adults

Data and AI Analytics for Non-Programmers (Excel, Sheets, Power BI)

Reports and dashboards that depend on other systems, with a clear record of what each source has promised.

See the syllabus

Browse the course atlas for more than one hundred options and use the coding roadmap to check prerequisites.

The four we are known for

Python, AI, vibe coding and agentic coding

These run underneath everything above. Every one is live and online, placed by ability rather than by age, and the first class is free.

Vibe codingAges 13 to 17

Vibe Coding for Teens

Python, web and AI projects where the learner still owns the thinking.

See the syllabus

Python and AICollege and adult

Python Automation Course

Automate the work you already do, then let AI carry part of it.

See the syllabus

AI and MLAges 14 to 18

AI and Machine Learning for Teens

Train a model, read what it learned, and be able to say why it is wrong.

See the syllabus

Agentic codingProfessionals

Codex & Claude Code

Run AI coding agents on real work without losing control of the codebase.

See the syllabus

Rijswijk today

A peace of 1697, a laboratory of 1959, and a new wijk from 2009

Rijswijk lies on the southern side of The Hague and the northern edge of Delft. The statistics office divides it into 11 wijken and 32 buurten, and the encyclopaedia names many neighbourhoods, among them Oud-Rijswijk, Te Werve, Hoornwijck, Welgelegen, the Bomenbuurt, Cromvliet and Stervoorde. The municipality has 1,398 hectares of land and 53 of water, at a published density of 4,343 residents per square kilometre.

Rijswijk in three dates from the encyclopaedia
Year	What happened
1697	the Peace of Rijswijk was signed at Huis ter Nieuwburg
5 January 1959	Shell began building its research laboratory in the Plaspoelpolder, which became an industrial and office district
2009 onwards	Sion, 't Haantje and Pasgeld, the last farmland in Rijswijk, began to be turned into the residential and business area of Rijswijk Buiten

Between two cities

Rijswijk is bounded by The Hague to the north and Delft to the south, and many of its neighbourhoods run straight on into theirs.

A population that jumped

The statistics give 46,415 residents in 1995, 47,372 in 2013 and 61,857 on 1 January 2026. The page places these figures beside the start of Rijswijk Buiten in 2009 without claiming how much of the rise it explains.

Work and study

The Plaspoelpolder grew into a district of offices and industry after 1959. The statistics also count higher professional and university students at institutions in the municipality, 1,220 and 1,130.

Promises between programs

What an API promises, and how a change breaks it

The table shows the kinds of change a service can make, and what each does to the programs relying on it. It is written as a general guide, not about any Rijswijk company.

Changes to a published interface, from harmless to breaking
The change	Example	Effect on programs that rely on it	How careful services handle it
Add something new	a new optional field, windspeed	none, old programs ignore it	a minor version number goes up
Fix a bug without changing the format	rounding corrected	usually none	a patch version number goes up
Rename a field	temperature becomes temp	programs reading temperature get nothing, and may crash	a major version, with the old name kept for a while
Change a unit	Celsius becomes Fahrenheit, same field name	programs show wrong numbers without any error	a new field or a new major version, never a silent swap
Remove a feature	an old endpoint switched off	every program still using it stops working	a deprecation notice months before, then removal

The most dangerous row is the unit change, because nothing fails loudly: the field is still there, the number still arrives, and it is simply wrong. The usual discipline for avoiding all of this is called semantic versioning. A version number has three parts, major, minor and patch; the patch number rises for fixes, the minor number for additions that break nothing, and the major number, the only one that warns of broken promises, rises for any change that could stop existing programs working. Around it sit the other habits of a trustworthy service: write the promise down, announce breaking changes well in advance, keep the old version running while people move, and test automatically that every promise still holds. A treaty signed at Huis ter Nieuwburg in 1697 held because its terms were written down and known. So do good interfaces.

Verified local facts

Rijswijk in the national statistics

The figures published for the municipality, each with its year, then the encyclopaedia history and the page's arithmetic.

Residents

46,415 in 1995, 47,372 in 2013, 60,717 in 2025 and 61,857 on 1 January 2026. The 2025 figure is 29,413 men and 31,304 women.

Ages in 2026

10,444 under fifteen, 6,437 aged fifteen to twenty-five, 17,918 aged twenty-five to forty-five, 14,420 aged forty-five to sixty-five, and 12,638 aged sixty-five and over.

Households

29,579 households in 2025, averaging 2.03 people, of which 12,865 are single-person households and 9,182 include children.

Homes and income

29,310 dwellings in 2025, 14,362 owner-occupied and 14,948 rented, with an estimated average value of 358,000 euro. Income averaged 36,000 euro per resident and 45,200 per income recipient in 2024, and 3.7 percent of residents were in poverty.

Schools and origin

18 primary establishments and 5 secondary establishments with 2,001 pupils, about 400 each, plus 588 MBO, 1,220 higher professional and 1,130 university students at institutions in the municipality. In 2025, 34,125 residents were of Dutch origin, 7,155 of European and 19,437 of non-European origin; 45,866 were born in the Netherlands and 14,851 abroad.

The arithmetic

61,857 minus 47,372 is 14,485, a rise of 30.6 percent since 2013, against 957 between 1995 and 2013. 2,001 over 5 is about 400. The age groups, the origin groups, the birthplaces, the men and women and the tenure groups were each totalled only to confirm them.

Modern Age Coders has no connection with the municipality of Rijswijk, Shell, Huis ter Nieuwburg or any school in the area, and nothing on the page implies one. The statistics are those published for Rijswijk for the years stated. The Peace of Rijswijk, the Shell laboratory, Rijswijk Buiten, the town's position and the neighbourhoods come from the encyclopaedia entry for Rijswijk, which gives 61,874 residents on 1 January 2026 and 14.50 square kilometres, from a different source, not combined with the statistics.

Signature project

Write the promise down, then test that it holds

A learner can build both sides of a promise: a small service that makes one, and a program that relies on it, then watch what happens when the promise changes.

1. Publish a contract

Build a tiny service that returns, say, a temperature in Celsius, and write down exactly what it promises: the field names, the types, the units and what happens on bad input.

2. Test the contract

Write tests from the user's side that check every promise. Run them automatically whenever the service changes, so a broken promise is caught before anyone relies on the new version.

3. Change it properly

Now make a breaking change the right way: a new major version, the old one kept running, a notice to users, and a date for switching the old version off.

Silent changes and what guards against them
What changed	Where it happens	What goes wrong	The guard
A library's behaviour after an update	every project with dependencies	code that worked yesterday fails today	pinned versions and reading the change log before upgrading
A field renamed in a data feed	reports built on another team's data	empty columns or crashes	a contract test run on every delivery
A unit changed without a new name	sensor data, prices, measurements	numbers that are wrong but look fine	units written into the contract and checked
An AI model updated by its provider	apps built on a hosted model	the same prompt gives different answers	pinning the model version and re-running evaluations on change
A treaty broken without notice	Europe, 1697 and after	the whole arrangement in doubt	terms written down and known to all parties

Why AI models need contracts too

Traditional software changes only when someone releases a new version. AI models blur that. A hosted model can be updated by its provider, and the same question, sent the same way, can produce a noticeably different answer the next week. An app that relied on the model returning a neat list, a particular tone or a certain level of caution may quietly stop working as intended, with no error and no change on its own side. The discipline that protects ordinary interfaces applies here with extra force. Pin the model version where the provider allows it. Keep a set of test prompts with the answers you rely on, and run them whenever anything changes. Treat the format you need from a model as a contract and check every response against it before using it. Rijswijk's name is attached to a peace that depended on written terms; programs that depend on AI need their terms written down just as clearly, because the other party can change without telling them.

Reliable pipeline

Five habits for keeping promises between programs

For APIs, data feeds, libraries, file formats and AI models. Practised in the town that gave its name to the Peace of 1697.

Changing software without breaking its users
Habit	In practice	What it prevents	The result
Write the contract	Document fields, types, units and error behaviour	Users guessing what was promised	A shared understanding
Version meaningfully	Use major, minor and patch numbers honestly	Breaking changes hidden in small updates	Upgrades users can judge
Deprecate before removing	Announce, keep the old version running, then switch off	Sudden breakage	Time for everyone to move
Test the contract	Run consumer-side tests on every change	Promises broken by accident	Breaks caught before release
Pin what you depend on	Fix library and AI model versions, upgrade deliberately	Surprises from other people's changes	Behaviour you control

For younger learners

A game that loads its levels from a small file. The child changes the file format and watches the game break, then adds a version number so the game knows which format it is reading.

For teenagers

A small web service and a separate app that uses it. The teenager renames a field, watches the app fail, then makes the change properly with a new version and a test that would have caught it.

For adults

A list of every outside system a report or tool depends on, with what each one promises and when it last changed. Adults often find dependencies nobody knew were there.

This section uses the Peace of Rijswijk only as an image, together with standard practice in software engineering. It says nothing about the terms of the treaty or about any system used by a Rijswijk company.

Learning ladder

From a level file with a version number to contracts with AI models

The free lesson sets the starting level, from how the learner handles a real task. Age alone does not set it, and neither does whether home is in Oud-Rijswijk or Rijswijk Buiten.

Ages 6 to 10

Agreed formats

Children see a game break when a file format changes without warning.

Scratch Coding for Kids Game Development for Kids

Ages 11 to 13

Version numbers

Learners add versions to their files and check them when loading.

Python and AI for Kids Maths Through Coding

Ages 14 to 18

Service and client

Teenagers build both sides of an API and test the promise between them.

App Development for Teens Data Science for Teens

Ages 18 to 67

Pinned and tested

Adults pin library and AI versions and test every contract.

Python Automation Course Data and AI Analytics for Non-Programmers (Excel, Sheets, Power BI)

Coding and AI

An AI model can change its answers after an update. Why should a teenager in Rijswijk learn to write contracts?

Because programs rely on each other the way parties to a treaty do, and an AI model is a party that can change without notice.

Applications built on AI models depend on those models behaving consistently: returning answers in a usable format, following instructions reliably, keeping a certain tone. Providers improve their models, and an improvement for most users can be a breaking change for one application, which finds its carefully tuned prompt now produces something different. Unlike a renamed field, the change raises no error. The app keeps running and quietly gets worse.

A learner who has built a small service and a client, renamed one field and watched the client fail, and then made the same change properly with a version number and a test, understands what it means to keep a promise in software. Deciding what a system promises, pinning the versions it relies on and testing those promises whenever anything changes are choices a person makes. The model will keep improving. Making sure improvements do not break the people who depend on it is human work.

So the case for a child in Rijswijk learning to code in 2026 is not the treaty or the laboratory. It is that someone who writes down what a system promises, and tests that the promise holds, will be needed wherever software is built on AI models and services that other people can change. The longer argument is in why a child should still learn to code in 2026.

Delivery

Online lessons for every part of Rijswijk

From Oud-Rijswijk to the new streets of Rijswijk Buiten, and from the edge of The Hague to the edge of Delft, a learner joins the same class from home.

Home, not a classroom

A learner in Stervoorde and a learner in Hoornwijck start the lesson together, each from home, with no journey through the evening traffic between two cities.

Dutch school terms stay Dutch

Brugklas, groep, vmbo, havo, vwo and the profielkeuze are kept as Rijswijk schools write them, while the teaching is in English.

A real first lesson, free

The first hour is a full lesson on a genuine task. The teacher then recommends a level, a course and a weekly time, with no payment details requested.

Matched groups

Five to ten learners at the same stage. Rijswijk has 10,444 residents under fifteen, but five who match on subject, level and hour are rare, so groups also draw on learners in other countries.

Regio Midden breaks

Two lessons a week, about eight a month, at one fixed hour, pausing for the regio Midden holidays that Zuid-Holland schools keep.

Teachers ahead in time

The teachers are in India, three and a half hours ahead of Rijswijk in summer and four and a half in winter, so late afternoons, evenings and weekend mornings are all available.

Twenty-three schools between two cities, and one group online

Rijswijk has 18 primary establishments and 5 secondary establishments teaching 2,001 pupils. A coding group needs five learners who match on subject, stage and hour, and across all ages from 6 to 67 and many countries they are much easier to find than inside one municipality.

Fees

Fees for Rijswijk families

Three prices, stated in full.

First classUSD 0

A real lesson on a real task, ending with a level and a course.

Group tuitionUSD 100

Monthly, normally eight lessons, five to ten learners at one level.

Private tuitionUSD 150

Monthly, normally eight lessons, one teacher and one learner.

The dollar fee is the same in every country, with no euro list beside it, so a family in Welgelegen pays what a family in Rijswijk Buiten pays. Nothing is charged until the free lesson has settled a course and a time; payment is then arranged over WhatsApp. The pricing page covers pauses, format changes and missed lessons.

Request placement Check availability

Reviews

Six Google reviews, word for word

Rated 4.9 across 547 Google reviews. These are real reviews, reproduced as written.

★★★★★

"The one step solution for my son. Modern Age Coders make learning coding so simple that kids love it. The teachers explain complex concepts clearly with practical exercises and interactive content."

Ria Mukherjee

Parent

★★★★★

"Modern Age Coders has been a game-changer for me. I struggled to grasp IT concepts and coding before joining, but their classes transformed everything. I can now confidently write complex programs with ease."

Samriddha Mondal

Student

★★★★★

"One of the most wonderful education centres out there. Education is not limited to school syllabus but focuses on skill development."

Vansh Agarwal

Student

★★★★★

"My child Dhairya is really enjoying the Modern Age Coders classes. This is his first online class and he eagerly looks forward to it. I can already see his improvement, and the teachers are very cooperative."

Sonam Oswal

Parent of Dhairya

★★★★★

"Modern Age Coders have wonderful teachers who teach in a clear, easy and practical way. The teacher boosts students' confidence and inspires them to learn without hesitation."

Sonu Goyal

Parent

★★★★★

"I highly recommend this computer coding class! The teachers are incredibly knowledgeable and passionate about coding."

Ritu Kedia

Parent

Free placement class

Where is the learner up to?

The first task might be a game that reads levels from a versioned file, a small service with a written promise, or a test that catches a renamed field before it breaks anything.

FAQ

Rijswijk coding class questions

The town, its treaty, its figures, and the lessons.

Where is Rijswijk?

On the southern side of The Hague and the northern edge of Delft, according to the encyclopaedia. The statistics office divides it into 11 wijken and 32 buurten.

How many people live in Rijswijk?

The national count was 61,857 on 1 January 2026, in 29,579 households in 2025. It was 46,415 in 1995 and 47,372 in 2013.

What was the Peace of Rijswijk?

A peace treaty signed in 1697 at Huis ter Nieuwburg in Rijswijk, according to the encyclopaedia.

What is the Plaspoelpolder?

An industrial and office district in Rijswijk. On 5 January 1959 Shell began building its research laboratory there, and the area grew around it, the encyclopaedia records.

What is Rijswijk Buiten?

A new residential and business area. From 2009, Sion, 't Haantje and Pasgeld, the last farmland in Rijswijk, began to be turned into Rijswijk Buiten.

How many schools are there in Rijswijk?

The statistics count 18 primary establishments and 5 secondary establishments teaching 2,001 pupils, with 588 MBO, 1,220 higher professional and 1,130 university students at institutions in the municipality. No school is rated here.

Which language are the lessons in, and when are they held?

English, with Dutch school words such as brugklas, havo and vwo kept in Dutch. The teachers work from India, three and a half hours ahead of Rijswijk in summer and four and a half in winter, so late-afternoon, evening and weekend times are easy to arrange. The time is agreed in the free lesson, and regio Midden holidays are kept.

Is there a Modern Age Coders classroom in Rijswijk?

No, and none is claimed here or anywhere in the Netherlands. All teaching is live and online and needs a laptop or desktop, working audio, a current browser and a connection that holds. The telephone number shown on this page is an Indian one and is described as such.

What do Rijswijk coding classes cost?

The first lesson is free. After it, group tuition is USD 100 a month for two live lessons a week, normally eight across the month, in a group of five to ten learners. One-to-one tuition is USD 150 a month at the same frequency with a single teacher. Course, format, recurring hour and availability are all confirmed before anything is paid.

How many learners are in a group?

Five to ten, matched on level, pace and goal rather than on age, school or address. One-to-one means a single learner with a single teacher. When no group at the right level is running, a family can take one-to-one lessons or wait for the next group to form.

Explore Haaglanden and beyond

Between The Hague and Delft, and across the province

To the north lies the city covered by coding classes in The Hague, and to the south Delft has its own page; Leidschendam-Voorburg is close by to the east. Every town and city in the province with a page is gathered on Zuid-Holland. For machine learning from the start there is the AI and Python Academy, and the complete series is listed on the Netherlands coding hub.

Book the free class Write to us on WhatsApp

Four courses for the town between The Hague and Delft

Game Development for Kids

App Development for Teens

Python Automation Course

Data and AI Analytics for Non-Programmers (Excel, Sheets, Power BI)

Python, AI, vibe coding and agentic coding

Vibe Coding for Teens

Python Automation Course

AI and Machine Learning for Teens

Codex & Claude Code

A peace of 1697, a laboratory of 1959, and a new wijk from 2009

Between two cities

A population that jumped

Work and study

What an API promises, and how a change breaks it

Rijswijk in the national statistics

Residents

Ages in 2026

Households

Homes and income

Schools and origin

The arithmetic

Write the promise down, then test that it holds

1. Publish a contract

2. Test the contract

3. Change it properly

Why AI models need contracts too

Five habits for keeping promises between programs

For younger learners

For teenagers

For adults

From a level file with a version number to contracts with AI models

Agreed formats

Version numbers

Service and client

Pinned and tested

An AI model can change its answers after an update. Why should a teenager in Rijswijk learn to write contracts?

Online lessons for every part of Rijswijk

Home, not a classroom

Dutch school terms stay Dutch

A real first lesson, free

Matched groups

Regio Midden breaks

Teachers ahead in time

Fees for Rijswijk families

Six Google reviews, word for word

Where is the learner up to?

Rijswijk coding class questions

Where is Rijswijk?

How many people live in Rijswijk?

What was the Peace of Rijswijk?

What is the Plaspoelpolder?

What is Rijswijk Buiten?

How many schools are there in Rijswijk?

Which language are the lessons in, and when are they held?

Is there a Modern Age Coders classroom in Rijswijk?

What do Rijswijk coding classes cost?

How many learners are in a group?

Between The Hague and Delft, and across the province

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