Coding Classes in Enfield and Edmonton

Course picks for Enfield

First courses for Enfield learners

Imagine a Year 3 child in Palmers Green who loves secret codes, a Year 8 pupil in Edmonton who wonders how a shop till knows a barcode was misread, a Year 12 student in Southgate choosing computer science or maths, and an office worker in Enfield Lock tired of fixing typing errors in spreadsheets. Each can start with a free lesson.

Ages 6 to 10

Scratch Coding for Kids

A Scratch secret-code game where a checking rule catches a wrong digit, and a first taste of error detection.

See the syllabus

Ages 9 to 12

Python and AI for Kids

First Python: add up the digits of a number, make a check digit, and catch a deliberate mistake.

See the syllabus

Ages 13 to 18

Python for Teens

Python for Key Stages 3 to 5, including this page's four check digit schemes and the full error test.

See the syllabus

Adults

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

For adults who handle reference numbers and want systems that catch mistakes before they cost money.

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

Enfield by the numbers

329,984 residents and 300 listed buildings

Every figure comes from the body named beside it, or from our count of that body's open data.

Enfield in figures, with sources
Item	Figure	Source
Usual residents, 2021 Census	329,984	ONS table TS001, via Nomis
National Heritage List entries inside the borough	300: 3 Grade I, 23 Grade II*, 274 Grade II	Historic England data, counted 25 September 2026
Barclays Bank, 20 The Town, first listed	30 March 2023, Grade II	Historic England list entry 1484988
Underground stations listed at Grade II*	Oakwood and Southgate, both on the Piccadilly line	Historic England list; TfL open data

Forty Hall

Two of Enfield's three Grade I entries are Forty Hall and the screen wall, gateway and north pavilions to its west. The third is the original block of Grovelands Park Hospital.

Water and flour

The list includes several parts of the King George Pumping Station beside the Lea Navigation, and buildings of Wright's Flour Mills, among them the old mill building.

Houses at Grade II*

Capel House, Broomfield House in Broomfield Park, Millfield House and Salisbury House are among the borough's 23 Grade II* entries.

The idea

One extra digit that checks the rest

A check digit is worked out from all the other digits and stuck on the end. If anyone mistypes the number, the sum usually stops working, and the machine can refuse it at once.

The four schemes learners code
Scheme	How the check digit is made	Where it comes from
Plain digit sum	Add all digits; choose the last so the total ends in 0	The simplest possible rule
Weighted sum	Multiply digits by 1 and 3 alternately, then add	A common textbook scheme
Luhn	Double every second digit from the right, subtract 9 from anything over 9, then add	Patented by Hans Peter Luhn of IBM: filed 1954, granted 1960
Verhoeff	Combine digits using the symmetries of a pentagon, position by position	A scheme built to catch every adjacent swap

Luhn's United States patent, number 2,950,048, is titled "Computer for verifying numbers" and was assigned to International Business Machines. The Verhoeff scheme needs no special machine at all, only a pair of small tables, which makes it a good challenge for sixth formers who have met modular arithmetic.

We would have listed Enfield's libraries on this page too. On 25 September 2026 the council's libraries address returned a page-not-found message, so we name none; Enfield Council's website is the place to check.

Signature project

Attack every scheme with every mistake

Learners generate 2,000 random 16-digit numbers, give each a check digit, then make every mistake of each kind and count how many are caught.

Wrong key

One digit replaced by any other. Every position, every wrong digit: 288,000 mistakes in total.

Swapped neighbours

Two different digits next to each other trade places, 34 typed as 43. The most common slip of a quick typist.

Twins and jumps

A doubled digit doubled wrongly, 33 typed as 66, and a swap across a middle digit, 123 typed as 321.

Share of mistakes caught, run 25 September 2026
Mistake	Plain sum	Weighted 1 and 3	Luhn	Verhoeff
Wrong key	100%	100%	100%	100%
Swapped neighbours	0%	88.9%	97.7%	100%
Twin error	88.9%	88.9%	93.3%	95.5%
Jump swap	0%	0%	0%	94.3%
Two random wrong keys	89.1%	88.7%	88.8%	88.9%

A plain sum cannot see order at all, so it misses every swap. Weighting by 1 and 3 catches most swaps but misses any pair that differs by 5, such as 16 and 61. Luhn misses exactly one kind of neighbour swap, 09 and 90, because doubling 9 and subtracting 9 gives 9 again. Verhoeff catches every neighbour swap and nearly all jumps. The last row is the humbling one: against two random wrong keys every scheme catches about nine in ten, because a single digit has only ten possible values, and one wrong number in ten will match by luck.

Why an AI helper does not replace this

An assistant will happily write any of these four functions. It will not decide which mistakes matter for your users, or notice that "catches all single errors" is true of every scheme and therefore says almost nothing. Learners who have attacked their own code with every possible mistake learn to test systems the way attackers and auditors do, which is exactly the skill that separates reliable software from software that merely runs.

What it teaches

Counting every case instead of guessing

The method matters more than the answer. Learners replace "it seems to work" with a complete count.

Exhaustive testing

Rather than trying a few examples, the program tries every mistake of each kind, so the percentages are counts, not impressions.

Finding the blind spot

When a scheme misses something, the code prints which cases, and learners explain the maths behind each miss, like 09 and 90 under Luhn.

Limits of one digit

Ten possible check values means roughly one random error in ten gets through, whatever the rule. Catching more needs more check digits.

GCSE computer science asks pupils about validation, including check digits; this project gives them a real understanding of why some checks are stronger than others. A-level students can take it further into modular arithmetic and group theory through Verhoeff. The list entries belong to Historic England and the patent record to the United States Patent and Trademark Office via Google Patents; the tests and percentages are our own, run on 25 September 2026. Historic England, Barclays, Enfield Council, TfL and the ONS have no connection with Modern Age Coders.

Getting around

Two listed Tube stations, and a class at home

Enfield's Piccadilly line stations are protected buildings. Our lessons need only a working computer.

Oakwood and Southgate

TfL's open data lists the Piccadilly line at both stations, and Historic England lists both at Grade II*.

Edmonton to Enfield Lock

Learners in the east of the borough and in the north can join one class from home without a single change of train.

No wrong platform

Every learner joins a group of five to ten at the same level, at a UK evening time agreed in advance.

Enfield and the other boroughs

Enfield is one of London's 32 boroughs. The London page covers all of them and the City, adding a link to each page as it appears, including Barnet just to the west.

Learning ladder

From secret codes to error detection

Where a learner starts is set by what they show us in the free lesson; their school year only helps us guess.

Ages 6 to 10

Codes and checks

Children make secret-code games in Scratch and add a simple rule that spots a wrong answer.

Scratch Coding for Kids Coding for Kids

Ages 10 to 13

Digits and sums

Python that splits numbers into digits, adds them up and checks them, with deliberate mistakes to catch.

Python and AI for Kids Maths Through Coding

Ages 13 to 18

Test every case

Check digit schemes, modular arithmetic and exhaustive testing, strong ground for GCSE validation and A-level projects.

Python for Teens Full Stack Web Development for Teens

Ages 18 to 67

Reliable systems

Adults learn how data is validated at the point of entry, and how to judge whether a check is strong enough.

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

Coding and AI

AI can write a checking function. Why should an Enfield teenager test one to destruction?

Because working code and trustworthy code are different things, and only testing shows which you have.

AI coding tools produce functions that pass the obvious example. What they rarely do unprompted is ask what could go wrong: which mistakes the check misses, and how often. On this page, a claim like "catches all single-digit errors" turns out to be true of the weakest scheme too, while the real differences hide in swaps and twins. A learner who has built the test that exposes those differences will not trust a function, human or machine made, until they have tried to break it.

That habit of adversarial testing runs through security, finance and safety engineering. Learners leave knowing to list the likely failures, count them all, and explain each miss. AI will keep writing code quickly; deciding whether it can be trusted is a person's job.

Enfield has a building listed partly for a machine that trusted people to type correctly. A learner here who can design for the times they do not is ready for a lot of modern work. The longer argument is in why teenagers should still learn to code in 2026.

Delivery

Southgate to Ponders End, lessons live online

From anywhere in Enfield, a learner is in class the moment the video call opens.

At the kitchen table

All a learner needs is a laptop or desktop, headphones and an internet connection that holds steady.

England's Key Stages

We map progress onto the Key Stages English schools use, Key Stage 1 through to sixth form, naming GCSE and A level where relevant. Teaching is in English.

Try before paying

The first lesson is genuine teaching with a teacher, and closes with a recommended level and course. We ask for no card details.

Five to ten per group

Learners are grouped by stage with others from around the UK and beyond, so a workable hour can nearly always be found.

A twice-weekly rhythm

Classes generally meet on two evenings a week, pausing for half terms, holidays and exams by arrangement.

Enfield time

Teachers work from India; each time in our messages is the time it will be in London.

Nearly 330,000 people, one right group

Enfield is home to almost 330,000 people, but a good class depends on five learners at one level being free at one time, which is why our groups draw from well beyond the borough.

Fees

Fees for Enfield families

The first lesson is free; after that one monthly fee applies, whether you live in Edmonton or Enfield Town.

First classUSD 0

A full lesson with a teacher at no cost, finishing with our suggested level, course and time.

Group tuitionUSD 100

About eight live lessons each month in a class of five to ten at the same stage.

Private tuitionUSD 150

About eight live lessons each month with a teacher all to themselves.

Enfield families pay in US dollars, the same as every family outside India, and the site carries no prices in pounds. You pay nothing before the free lesson and before settling on a course and a weekly slot. Pausing, missed classes and moving between group and private lessons are all covered on the pricing page.

Request placement Check availability

Reviews

Six families, in their own Google reviews

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

Claim a free lesson

Tell us the learner's age or year group and something they like. The first lesson could be a Scratch secret-code game, a Python digit checker, or the check digit tests on this page.

FAQ

What Enfield families ask

About the borough, the check digit project and how lessons work.

How many people live in Enfield?

The London Borough of Enfield had 329,984 usual residents at the 2021 Census, in Office for National Statistics table TS001.

Was the first cash machine really in Enfield?

Historic England's list entry for Barclays Bank, 20 The Town, Enfield, listed at Grade II on 30 March 2023, gives as a reason for listing that it is the site of the world's first operational automated teller machine, inaugurated on 27 June 1967.

What is a check digit?

An extra digit calculated from the others and added to the end of a number. If a digit is later mistyped, the calculation usually no longer works, so the mistake can be caught straight away.

What is the Luhn check?

A check digit method named after Hans Peter Luhn of IBM, whose patent for a computer for verifying numbers was filed in 1954 and granted in 1960. It doubles every second digit, which lets it catch almost all swaps of neighbouring digits.

Which scheme caught the most mistakes?

Verhoeff caught every swap of neighbouring digits and most jump swaps. Luhn missed only swaps of 0 and 9. Against two random wrong keys, though, every scheme caught about nine mistakes in ten, the limit for a single check digit.

When would Enfield lessons be?

Once the free lesson is finished we propose a regular weekly time in a class at the learner's level with a place open. Teachers are based in India, and all times we send are London times.

Is special equipment needed?

No. A laptop or desktop, headphones or speakers and a dependable connection are enough. The check digit project runs in plain Python with no downloads.

Is there a Modern Age Coders centre in Enfield?

No. There is no Enfield centre and no premises anywhere in the UK, because every lesson is live online. A learner needs a computer with sound and a stable connection, and our phone number is Indian.

What do coding classes in Enfield cost?

The first lesson is free. After that, a group place costs USD 100 a month for two live lessons a week, about eight a month, with five to ten learners, and one-to-one teaching on the same timetable costs USD 150 a month. Nothing is charged until the course, format and time are agreed.

How are the groups made up?

By level, pace and goals rather than by age or neighbourhood, with five to ten learners at one stage. Where no group fits the learner's week, one-to-one lessons are offered.

Explore London

More London boroughs, and the UK

The London page gathers every borough and the City and links each page when it is live, such as Bromley in the far south east and Redbridge to the east. For learners interested in machine learning there are our AI and machine learning classes in London, and the UK coding page lays out how schooling differs across the four UK nations.

Book the free class Message us on WhatsApp

First courses for Enfield learners

Scratch Coding for Kids

Python and AI for Kids

Python for Teens

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

329,984 residents and 300 listed buildings

Forty Hall

Water and flour

Houses at Grade II*

One extra digit that checks the rest

Attack every scheme with every mistake

Wrong key

Swapped neighbours

Twins and jumps

Why an AI helper does not replace this

Counting every case instead of guessing

Exhaustive testing

Finding the blind spot

Limits of one digit

Two listed Tube stations, and a class at home

Oakwood and Southgate

Edmonton to Enfield Lock

No wrong platform

From secret codes to error detection

Codes and checks

Digits and sums

Test every case

Reliable systems

AI can write a checking function. Why should an Enfield teenager test one to destruction?

Southgate to Ponders End, lessons live online

At the kitchen table

England's Key Stages

Try before paying

Five to ten per group

A twice-weekly rhythm

Enfield time

Fees for Enfield families

Six families, in their own Google reviews

Claim a free lesson

What Enfield families ask

How many people live in Enfield?

Was the first cash machine really in Enfield?

What is a check digit?

What is the Luhn check?

Which scheme caught the most mistakes?

When would Enfield lessons be?

Is special equipment needed?

Is there a Modern Age Coders centre in Enfield?

What do coding classes in Enfield cost?

How are the groups made up?

More London boroughs, and the UK

Keep exploring Modern Age Coders

Coding classes in nearby places

Free resources

From the blog

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