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Wrexham, North Wales

Coding classes in Wrexham

What are the best coding classes in Wrexham?

Wrexham county borough had 135,117 usual residents at the 2021 census, and the Caia Park area had 4,890.9 people per square kilometre. Wrexham appears among the Welsh cities on the UK government's List of Cities, last updated on 29 August 2022. Wrexham learners aged six to sixty-seven study with our teachers in India over live video, in one-to-one lessons or in classes of five to ten at one level, at times set around the Welsh school day and working week. We charge nothing for the first lesson; afterwards a group place is USD 100 a month and a private teacher USD 150 a month.

A monitoring station called Wrexham, run by the Welsh Air Quality Network less than a kilometre from the city centre, has published hourly nitrogen dioxide readings since at least 2005. Its yearly average fell from 20.2 micrograms per cubic metre over the first five years to 14.0 over the last five. But did it fall every year? No: in 9 of the 20 steps from one year to the next it rose. Our Wrexham project uses isotonic regression, which finds the closest curve that never goes up, to separate the long fall from the year-to-year wobble. That curve explains 88.4% of the variation, a straight line only 68.2%, and it shows the fall levelling off after 2020.

Facts last verified 23 September 2026. Teaching is online; no Wrexham branch is claimed.

Course picks for Wrexham

Four courses for the city of St Giles

Pick the course closest to what the learner already enjoys. All four open with a free live lesson, and you can book it without giving any card details.

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.

Wrexham today

A young city with a busy centre

Office for National Statistics census results for 2021, drawn from Nomis, for three central middle-layer areas as the House of Commons Library names them, set beside the county borough and Wales.

Central Wrexham, 2021 census
Middle-layer areaResidentsShare of over-fives in full-time educationDensity per square kilometre
Town North, University and Rhos-ddu8,92317.6%3,270.3
Caia Park6,86127.5%4,890.9
Wrexham West8,67819.6%2,082.7
Wrexham county borough135,11719.3%268.2
Wales3,107,49419.9%149.9

Caia Park

The most closely packed of the three areas, with 1,752 of its 6,372 residents aged five and over in full-time education, and 7.1% of residents under five.

Town North

Town North, University and Rhos-ddu had 283 people in communal establishments and 1,506 residents aged five and over in full-time education.

The county borough

Across Wrexham county borough, 5.2% of residents were under five in 2021, against 5.0% in Wales, at 268.2 people per square kilometre.

The census counts schoolchildren and students together as people in full-time education, and each percentage uses its own table's total. Our Wrexham classes draw on the city and the villages around it. A Rhosnesni eight-year-old coding a first game, a Year 11 student from Borras preparing for WJEC GCSE Computer Science and a Gwersyllt adult learning Python to automate spreadsheets could each join a different class, grouped by level.

St Giles and Elihu Yale

A tower of the early 1500s and an American connection

From the UK government's List of Cities and from Cadw's full listing reports for the Parish Church of St Giles (record 1769) and the tomb of Elihu Yale (record 1770).

About 1506 to 1520

Cadw dates St Giles mainly to the late 15th century, culminating in the tower of about 1506 to 1520, with arcades kept from a 14th-century church. It is listed at Grade I.

22 July 1721

The churchyard tomb of Elihu Yale, whom Cadw names as the founder of Yale University, is inscribed with his burial on that day. Cadw records that he lived at Plas Grono, in the parish of Wrexham, late in life.

A city of Wales

The UK government's List of Cities, updated on 29 August 2022, names seven cities in Wales: Bangor, Cardiff, Newport, St Asaph, St Davids, Swansea and Wrexham.

Cadw records restorations of St Giles in 1867 to plans by Benjamin Ferrey, in 1894 and in 1903 and 1904 by H A Prothero, and notes that the Yale tomb was restored in 1820 and again in 1874. It also lists the churchyard gates at Grade II*. We have no connection with Cadw, the church or the UK government, and the history here is taken from their published records.

Where the air data comes from

The Welsh Air Quality Network publishes hourly readings for its Wrexham site as R data files, the format read by the openair package. The files give times in Greenwich Mean Time, and openair documents each value as belonging to the hour that begins at the stated time. Nitrogen dioxide is given in micrograms per cubic metre.

Signature project

Did Wrexham's air get cleaner every year?

Isotonic regression fits the closest curve that obeys one rule, here that it never goes up. Where the real averages break the rule, the pool-adjacent-violators algorithm merges neighbouring years into a block and gives the whole block its average, repeating until no block is higher than the one before it.

Nitrogen dioxide at the Welsh Air Quality Network's Wrexham site: annual means pooled by isotonic regression (never rising), micrograms per cubic metre
Years pooled togetherFitted levelWhat the pooling hides
2005 to 201020.85A climb to 24.2 in 2010
2011 to 201420.54Rises in 2012 and 2013
201519.00Nothing: already lower
201618.83Nothing: already lower
2017 to 201817.32A rise from 16.5 to 18.2
201916.43Nothing: already lower
2020 to 202213.92A rise from 12.9 to 14.7 in 2021
2023 to 202513.65A rise to 14.2 in 2025

1. Average each year

Turn 174,910 hourly readings into 21 yearly averages. Every year has at least 80% of its hours measured, so no year rests on a handful of days.

2. Pool the violators

Walk along the years. Whenever a year is higher than the one before, merge the two and average them, then check backwards again. What is left is a staircase that only steps down.

3. Compare with a line

The staircase explains 88.4% of the variation between years; the least-squares straight line, falling 0.432 a year, explains 68.2%. The staircase shows where the fall happened and where it stalled.

Is the staircase just flexible?

A curve with more steps will always fit better than a straight line, so a high score alone proves little. The fair test is to shuffle the 21 yearly averages into random order and fit the staircase again. Out of 10,000 shuffles, none fitted as well as the real sequence. The downward order is genuine, not a product of the method's freedom. Weighting each year by the hours actually measured changes the fitted levels by 0.04 at most.

The staircase tells a clear story. Levels stayed around 20 to 21 from 2005 to 2014, fell in stages to 16.43 in 2019, and dropped to about 14 from 2020 onwards, where they have stayed: the last two blocks differ by only 0.27. So the air at this site has become cleaner over two decades, but not every year, and not much since 2020. The hourly data show why readings move within each day too: across all 21 years, the hour beginning 07:00 GMT averaged 25.9 and the hour beginning 03:00 averaged 8.8, while Sundays averaged 13.2 against 19.9 on Fridays.

Monotone trends

Five checks before saying something improved every year

Learned on Wrexham's air, then used for waiting times, energy use, error rates, sales and any record where people claim a steady improvement.

Decisions behind the Wrexham air study
QuestionFor the Wrexham readingsWhat goes wrong if you skip it
Is each year well measured?At least 80% of hours in every yearA year of scattered days treated as complete
What rule is being tested?Never rising, fitted by pool-adjacent-violatorsA wobbly line read as steady improvement
Is the fit better than chance?10,000 shuffled orderingsA flexible curve mistaken for a strong trend
What time are the readings in?GMT, hour beginning, from the openair documentationRush hours shifted by an hour in summer
Where did the change stop?Last two blocks 0.27 apartAn old improvement reported as still going

The fourth row matters for the hourly patterns. The readings are stamped in Greenwich Mean Time, so the busiest hour, beginning 07:00 GMT, is 08:00 on a Wrexham clock in summer. Reading GMT as local time would move every summer rush hour by sixty minutes.

Younger learners

Recording a number each day, drawing it as a line and colouring the days when it went up instead of down.

Teenagers

Averages, isotonic regression with pool-adjacent-violators and permutation tests in Python on 21 years of real readings.

Adults

Testing claims of steady improvement at work, with the rule stated, the fit checked against chance and the stall points shown.

We have no connection with the Welsh Air Quality Network, Cadw, St Giles' Church or Wrexham County Borough Council. The readings, listing reports and census tables are published openly; the averages, isotonic fits and shuffles on this page are our own analysis, and nothing here is health advice.

Learning ladder

From daily tallies to isotonic regression

Ages are approximate; the free lesson shows where a learner should start.

Ages 6 to 10

Ups and downs

Recording numbers, drawing them as bars in block code and spotting where they rise and fall.

Scratch Coding for KidsProblem Solving and Computational Thinking for Kids
Ages 11 to 13

Averages in Python

Lists, loops and yearly averages in Python, with charts of how a measurement changes over time.

Python and AI for KidsMaths Through Coding
Ages 14 to 18

Fits with rules

Isotonic regression, straight-line fits and permutation tests on Welsh Air Quality Network data.

Data Science for TeensPython for Teens
Ages 18 to 67

Improvement claims

Checking whether a process has really improved every period, with honest tests and clear charts.

Data Analysis CourseData Science Course
Coding and AI

AI will happily say a number is falling. Why should a Wrexham teenager check how?

Because falling on the whole and falling every year are different claims, and the difference matters to anyone reporting progress.

Give an AI assistant 21 yearly averages and it may well report a steady decline of 0.432 a year. That line hides nine years when the reading rose and the stall since 2020. A learner who has run pool-adjacent-violators by hand sees exactly which years broke the pattern and asks about them.

The shuffle test is the second habit. Flexible methods can make any data look orderly, and many AI models are very flexible indeed. Checking a fit against shuffled data is a simple, powerful way to tell real structure from the method's own freedom.

So a Wrexham teenager should keep learning to code in 2026, in a city whose church tower Cadw dates to the early 1500s: AI can summarise a trend, but people still have to ask whether it really happened every year. The longer argument is in why coding is worth learning in 2026.

Delivery

Rhosddu, Hightown or Gwersyllt, in the same class

Wrexham's learners live across the city and the villages around it. Online, every one of them is just as close to the lesson.

City and villages

A learner in Rhostyllen and another in Acton can share a class without either of them crossing town.

Set to the Welsh system

Placement follows the Welsh school year a learner is in and the Curriculum for Wales, with WJEC names for GCSE and A level courses; the teaching language is English.

A useful first session

Nobody sits through a sales talk: the free lesson is a real coding task, after which the teacher recommends where to start, which course suits and a regular weekly slot. No card is requested.

Classes by level

Five to ten learners at one stage, from Wrexham, the rest of the UK and abroad, keeping sensible times open at every level.

Two lessons a week

A steady pattern of two lessons each week, roughly eight in a month; holidays and exam periods are worked around by agreement with the teacher.

Evenings for our teachers

Our teachers are in India, which keeps a single time zone all year, so a 5 pm Wrexham lesson falls at half past nine their time in summer and half past ten in winter.

Across North East Wales

Learners in Holt, Chirk, Llangollen or Ruabon join exactly the same classes, because every lesson is online and classes are formed by level.

Fees

Wrexham lesson fees

The first lesson costs nothing, then there is a single monthly fee.

First classUSD 0

One whole lesson at no cost, ending with a suggested level, course and weekly time.

Group tuitionUSD 100

Around eight live lessons a month in a class of five to ten learners at the same level.

Private tuitionUSD 150

Around eight live lessons a month, with a teacher focused on your learner only.

Stansty and Garden Village families are invoiced in US dollars, the same as every family living outside India, and no price on our site is shown in pounds. We bill nothing before the free lesson is over and a course and weekly time have been chosen with us; the pricing page sets out pauses, missed lessons and moving between group and one-to-one teaching.

Reviews

Six Google reviews from families, left as written

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

Book a free lesson for a Wrexham learner

The first lesson suits the learner: a daily-tally chart game for a young child, a short Python program that averages a list of readings for a beginner, or 21 years of Wrexham air data and isotonic regression for a teenager ready for real statistics.

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FAQ

Wrexham coding class questions

What Wrexham families most often ask us.

How many people live in Wrexham?

Census 2021 counted 135,117 usual residents in Wrexham county borough. The central middle-layer areas the House of Commons Library names Town North, University and Rhos-ddu, Caia Park, and Wrexham West had 8,923, 6,861 and 8,678.

How does Wrexham compare with Wales?

The county borough is more densely settled, at 268.2 people per square kilometre against 149.9 for Wales, and 5.2% of its residents were under five in 2021, against 5.0% in Wales.

What is isotonic regression?

A way of fitting the closest curve that obeys an order rule, such as never rising. The pool-adjacent-violators algorithm merges neighbouring values that break the rule and replaces them with their average until the rule holds everywhere.

Has Wrexham's air got cleaner?

At the Welsh Air Quality Network's Wrexham site, yearly nitrogen dioxide averaged 20.2 micrograms per cubic metre over 2005 to 2009 and 14.0 over 2021 to 2025. But it rose in 9 of the 20 year-to-year steps, and the fitted level has barely changed since 2020.

Where does the air data come from?

From the Welsh Air Quality Network, which publishes hourly readings for its Wrexham site in the data format used by the openair package, with times in Greenwich Mean Time. We are not connected with the network.

Is Wrexham a city?

Yes. The UK government's List of Cities, last updated on 29 August 2022, includes Wrexham among the cities of Wales.

When do Wrexham lessons take place?

Most Wrexham families pick a slot after school, on a weekday evening or at the weekend, and we confirm it in the free lesson. Because the teachers work from India, the lesson sits in their late evening: India is four and a half hours on from Wrexham between March and October and five and a half hours on for the rest of the year.

Is there a centre in Wrexham?

No. We have no Wrexham centre and no premises anywhere in the UK, because every lesson is live online. Learners need a computer with sound and a reliable connection, and our phone number is Indian.

How much are Wrexham lessons?

The first lesson is free. After it, 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 learners grouped?

By level, pace and goals rather than by age or address, with five to ten learners at the same stage. When no group fits the learner's week, we offer one-to-one lessons.

Explore Wales and the UK

Wales and beyond

Nearby, the St Asaph page reads which way the Vale of Clwyd faces from a height map, and across the border Chester fits river recessions by gradient descent. There is separate help for WJEC GCSE Computer Science and for WJEC GCSE Digital Technology. For how our stages sit alongside Welsh schooling, see the Wales guide; every other city is linked from the UK coding page.

Free Wrexham classCall +91 91233 66161

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