--- title: "Coding and AI Classes in Pontypridd | Ages 6 to 67" description: "Live online coding and AI classes for Pontypridd, Treforest, Cilfynydd and Rhydyfelin, ages 6 to 67, with Python and maths. Book a free first lesson today." canonical: https://learn.modernagecoders.com/best-coding-and-ai-classes-in-pontypridd source: src/pages/best-coding-and-ai-classes-in-pontypridd.html --- > Live online coding and AI classes for Pontypridd, Treforest, Cilfynydd and Rhydyfelin, ages 6 to 67, with Python and maths. Book a free first lesson today. Skip to contentRecommended courses ## Coding and AI courses for Pontypridd learners Choose by age. Every course opens with a free live lesson, booked without a card. [![Problem Solving and Computational Thinking for Kids course thumbnail](/images/problem-solving-kids.webp)Ages 7 to 12Problem Solving and Computational Thinking for KidsSearching, sorting and shortcut games, worked through before any code.See the syllabus](/courses/problem-solving-and-computational-thinking-for-kids)[![Vibe Coding for Kids course thumbnail](/images/vibe-coding-kids.webp)Ages 8 to 12Vibe Coding for KidsChildren ask an AI for a Scratch game, then test it and fix what is wrong.See the syllabus](/courses/vibe-coding-for-kids-beginners-ai-scratch-game-dev)[![Problem Solving for Teens course thumbnail](/images/problem-solving-teens.webp)Ages 13 to 17Problem Solving for TeensData structures and algorithms in Python, including the CF37 skip list.See the syllabus](/courses/problem-solving-dsa-masterclass-teens)[![Python Masterclass course thumbnail](/images/python-college.webp)Students and adultsPython MasterclassPython from first lines to efficient data handling and AI tools.See the syllabus](/courses/python-programming-masterclass-zero-to-advanced-college) Browse the [course atlas](/course-atlas) for more than one hundred options and use the [coding roadmap](/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 Coding for Teens course thumbnail](/images/vibe-coding-teens.webp)Vibe codingAges 13 to 17Vibe Coding for TeensPython, web and AI projects where the learner still owns the thinking.See the syllabus](/courses/vibe-coding-for-teens-python-web-ai-projects-course)[![Python Automation Course course thumbnail](/images/python-college.webp)Python and AICollege and adultPython Automation CourseAutomate the work you already do, then let AI carry part of it.See the syllabus](/courses/python-ai-automation-masterclass-college)[![AI and Machine Learning for Teens course thumbnail](/images/ai-ml-teens.webp)AI and MLAges 14 to 18AI and Machine Learning for TeensTrain a model, read what it learned, and be able to say why it is wrong.See the syllabus](/courses/ai-ml-masterclass-teens)[![Codex & Claude Code course thumbnail](/images/codex-claude-code-adults.webp)Agentic codingProfessionalsCodex & Claude CodeRun AI coding agents on real work without losing control of the codebase.See the syllabus](/courses/codex-and-claude-code-ai-coding-agents-masterclass-for-adults-professionals)Pontypridd at a glance ## Pontypridd, Treforest, Trallwn, Cilfynydd and Glyncoch Census counts, the neighbourhoods inside the town, and the postcode district we use. | Area | Usual residents | | --- | --- | | Pontypridd built-up area | 31,900 | | Rhondda Cynon Taf county borough | 237,651 | Rhondda Cynon Taf also covers Aberdare, the Rhondda valleys and Mountain Ash, so the borough is its own count, not a sum of towns. According to postcodes.io, Treforest, Trallwn, Cilfynydd, Graig, Hopkinstown, Glyncoch, Maesycoed, Rhydyfelin, Upper Boat and Hawthorn are suburban areas whose nearest postcode lies in the Pontypridd built-up area. The CF37 postcode district is wider than the town: it also reaches Ynysybwl and Trehafod, which the ONS treats as separate places. Pupils here are taught under the Curriculum for Wales and sit WJEC exams at GCSE and A level; our lessons are in English, and a learner's Welsh year group is only the opening guess before the trial lesson. ### Pages close to Pontypridd Try [Cardiff](/best-coding-class-in-cardiff), [Rhondda Cynon Taf](/coding-classes-in-rhondda-cynon-taf), [Caerphilly](/coding-classes-in-caerphilly-county-borough) and [WJEC GCSE Computer Science help](/wjec-gcse-computer-science-help-wales). We explain why every learner must be able to read their own code in [understand the code, don't copy-paste](/understand-the-code-dont-copy-paste-uk). The Pontypridd project ## Express lanes through 885 postcodes, decided by coin tosses Three ways to find a postcode in a sorted list, counted comparison by comparison. The data is every CF37 postcode in Ordnance Survey's Code-Point Open, 885 of them, sorted from CF37 1AA upwards. The question is simple: how many times must the program compare two postcodes before it finds the one it wants? The slowest answer is to start at the top and read down, which takes 443 comparisons on average. The usual fast answer is binary search, the method behind Python's `bisect` module: look at the middle, discard the half that cannot hold the target, repeat. That takes 10.85 comparisons on average, close to the 9.79 you get from log base 2 of 885. Binary search needs the whole list stored in one block so it can jump straight to the middle. A linked list, where each postcode only knows the next one, cannot jump. The skip list fixes that by adding lanes. Every postcode sits on level 1. A coin toss decides whether it also sits on level 2; if that toss succeeds, another toss decides level 3, and so on. A search starts on the highest lane, runs forward until the next stop would overshoot, drops down a lane, and repeats until it reaches level 1. | Method | Average comparisons | Extra links per postcode | | --- | --- | --- | | Read the list from the top | 443 | none | | Binary search (bisect) | 10.85 | none | | Skip list, coin lands heads half the time | 19.15 | about 1 | | Skip list, heads a quarter of the time | 18.32 | about 0.33 | The skip list figures are averages over 20 separate random builds, and the builds really do differ: with fair coins, the average search ranged from 16.89 to 20.64 comparisons depending on how the tosses fell, the tallest tower reached between 8 and 13 levels, and the single worst search in all 20 builds took 37 comparisons. In one build, seeded 20261001, the levels split 464, 199, 105, 57, 30, 13, 8, 4 and 5 from the bottom up, close to halving at each step as a fair coin should give; in that build, finding CF37 1DL took 15 comparisons, against 11 for binary search. Biased coins that rarely promote save memory, about a third of a link per postcode instead of one, at the price of a worse unlucky case: 49 comparisons for the slowest search. So binary search wins on reading. Why would anyone choose a skip list? Because the CF37 list changes as new streets are built. Inserting one postcode into a Python list means shifting everything after it along by one, about half the list on average. Inserting into a skip list means tossing coins for the new entry and rewiring around two links on average. That trade, slightly slower searching for much cheaper updating, is why skip lists still sit inside working systems: the Redis database uses one for its sorted sets. ### Ages 8 to 11 A paper skip list of class names: toss a coin for each one and race to find a name using the top row first. ### Ages 11 to 15 Load the postcodes in Python, count comparisons for reading down and for binary search. ### Ages 15 and up Build the skip list, run 20 random builds, and explain why the worst case moves around. ### Sources and limits Postcodes are from Ordnance Survey Code-Point Open 2026.3.0, which contains Royal Mail and Ordnance Survey data under the Open Government Licence. Census figures are from the ONS. The skip list, the 20 random builds and every count in the table come from our own Python run; a different set of coin tosses gives slightly different numbers. Data structures and AI ## What a coin-toss data structure teaches about AI-written code Randomness can be a design choice, but only if you measure what it does. | Finding from the postcodes | Lesson for AI-written code | | --- | --- | | Binary search beat the skip list on lookups | The fanciest structure is not always the right one | | Skip lists win when data keeps changing | Choose for the job: reads, writes or both | | 20 builds gave 20 different averages | Test randomised code more than once | | The worst search was nearly double the average | Look at the tail, not only the mean | | Fewer promotions saved memory but cost speed | Every tuning number trades one thing for another | Ask an AI for "a fast way to look up postcodes" and you may get a skip list, a binary search, a dictionary or a database call, each delivered with the same confidence. Choosing between them needs exactly the measurement this project practises. That is how we teach vibe coding: the AI drafts, the learner counts. Agent-building of their own waits until a learner's Python can manage alone, typically by Year 12 or in adult life; anything involving Copilot Studio is private tuition only. Our [AI agents course for UK students](/ai-agents-course-for-students-uk) and [problem-solving skills through coding](/problem-solving-skills-through-coding-uk) say more. Ordnance Survey, the ONS, postcodes.io and Redis have no connection with Modern Age Coders. We use their published data and documentation; the experiments are ours. Stages ## From paper shortcuts at seven to measured data structures at seventeen We start from the Welsh school year and let the trial lesson adjust it. Years 2 to 6 ### Finding things fast Searching games, ordering and shortcuts, often on paper first. [Problem Solving and Computational Thinking for Kids](/courses/problem-solving-and-computational-thinking-for-kids)[Scratch Coding for Kids](/courses/scratch-programming-complete-course)Years 4 to 8 ### Making with AI Scratch built with an AI helper, then the first steps in Python. [Vibe Coding for Kids](/courses/vibe-coding-for-kids-beginners-ai-scratch-game-dev)[Python and AI for Kids](/courses/python-ai-kids-masterclass)Years 9 to 13 ### Structures and algorithms Lists, searches and randomised structures, counted and compared in Python. [Problem Solving for Teens](/courses/problem-solving-dsa-masterclass-teens)[Python for Teens](/courses/python-complete-masterclass-teens)Adults ### Code that scales Python for work, with the data structure choices explained and tested. [Python Masterclass](/courses/python-programming-masterclass-zero-to-advanced-college)[Data Structures & Algorithms Course](/courses/data-structures-algorithms-masterclass-college)Searching and AI ## What is a skip list, and why does it matter when AI suggests a data structure? A skip list is a sorted linked list with extra express lanes above it, where coin tosses decide which items appear on each higher lane, so a search can skip ahead on the top lanes and drop down only near its target, giving fast searches and cheap insertions without strict balancing. Across all 885 CF37 postcodes, a fair-coin skip list needed 19.15 comparisons on average to find one, against 10.85 for binary search and 443 for reading the list from the top, but it can take a new postcode by changing about two links. Learners who measure that understand that a suggested structure is a trade, and they ask an AI which trade it has made. For a Pontypridd teenager, measuring before trusting is what keeps them in charge of AI tools rather than led by them, and that habit comes from writing the code. The longer argument is in [why it still pays to learn coding in 2026](/blog/is-coding-worth-learning-2026). Lessons ## How classes run for a Pontypridd learner All lessons are live on video. A computer with a keyboard is needed, because a tablet alone cannot run Python well. ### Code by the learner The learner types and runs everything, and explains it as they go. ### Level first The trial lesson shows us the starting point before we suggest a course. ### No-cost trial The first lesson is free and asks for no payment details. ### Five to ten together Groups share one level and join from across the UK. ### About eight a month Normally two sessions weekly during term; ask and we skip the local school holidays. ### UK clock kept Lessons stay at the same UK time through the clock changes. Why online Matching five to ten learners at one exact level is much easier across the UK than in one valley town, and video means no travelling. Fees ## Prices for Pontypridd families Learners in Pontypridd pay what all learners outside India pay. First class**USD 0** First lesson: free and a full session, with a course suggestion to close. Group tuition**USD 100** Group class, generally eight lessons a month. Private tuition**USD 150** Private lessons, generally eight a month. Our fees are in US dollars and we publish no sterling price. The trial is free, and charges begin only after a course and a fixed weekly time are agreed. The pricing page explains breaks for holidays, missed lessons and switching between group and private. Request placement[Check availability](https://wa.me/919123366161?text=Hello%20Modern%20Age%20Coders%2C%20we%20would%20like%20to%20book%20a%20free%20coding%20or%20AI%20trial%20lesson.%20We%20are%20in%20Pontypridd.)Reviews ## Google reviews from families in Wales and around the UK 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 Pontypridd lesson Tell us the learner's age or school year and what they like. The trial might be a shortcut game, a Scratch game built with an AI, a first Python program, or the CF37 postcode search. ### Want a class sooner? Book a priority demo A priority demo is a full class of about 45 to 60 minutes. After the class the mentor sends a written skill report and a personal learning roadmap on WhatsApp. If you enrol, the demo fee is adjusted against your first month's fee. Share your demo Order ID with us on WhatsApp and we take it off. [Book a priority demo](/book-demo) ### Contact the team directly WhatsApp or call [+91 91233 66161](tel:+919123366161), or email [connect@modernagecoders.com](mailto:connect@modernagecoders.com). This is Modern Age Coders' actual contact, an Indian number, and not an invented Pontypridd one. [WhatsApp Modern Age Coders](https://wa.me/919123366161?text=Hello%20Modern%20Age%20Coders%2C%20we%20would%20like%20to%20book%20a%20free%20coding%20or%20AI%20trial%20lesson.%20We%20are%20in%20Pontypridd.) Submitted details are used for placement and follow-up. FAQ ## Pontypridd questions The skip list project, searching, vibe coding and practical details. ### How many people live in Pontypridd? Census 2021 recorded 31,900 usual residents for the Pontypridd built-up area, within a county borough of 237,651. ### Can learners in Pontypridd join these coding and AI classes? Yes. Classes run live online for ages 6 to 67 in Pontypridd, Treforest, Cilfynydd, Rhydyfelin and the surrounding area. ### What is binary search? A way to find an item in a sorted list by checking the middle, throwing away the half that cannot contain it, and repeating. Each step halves what is left. ### Who invented the skip list? William Pugh, who published it in Communications of the ACM in 1990 as a probabilistic alternative to balanced trees. ### What did the Pontypridd project find? Across 885 CF37 postcodes, a fair-coin skip list averaged 19.15 comparisons per search, binary search 10.85 and reading from the top 443. ### What is vibe coding? Building software by describing it to an AI, then running, checking and repairing the result. We teach it with typed Python so learners understand what they keep. ### When do learners build AI agents? Once their Python is solid without help, usually in the sixth form or as adults. Copilot Studio agents are taught one-to-one only. ### Does this support WJEC GCSE computer science? Searching, data structures and programming are part of WJEC GCSE and A level computer science, and we teach them thoroughly. We do not promise grades. ### What are the fees? The trial lesson is free. After that, group classes cost USD 100 a month and private lessons USD 150 a month. ### Can lessons pause for half term? Yes. Send the Rhondda Cynon Taf term dates and we keep the holidays free. More nearby ## More pages for South Wales Visit [Cardiff](/best-coding-class-in-cardiff), [Llandaff](/vibe-coding-and-ai-agents-classes-in-llandaff-cardiff), [Caerphilly](/coding-classes-in-caerphilly-county-borough) and [Rhondda Cynon Taf](/coding-classes-in-rhondda-cynon-taf). Every other Welsh town is on our [page for Wales](/coding-and-ai-classes-in-wales), and the rest of Britain on the [UK hub](/coding-classes-in-united-kingdom). Book the free class[Book a priority demo](/book-demo)[WhatsApp us](https://wa.me/919123366161?text=Hello%20Modern%20Age%20Coders%2C%20we%20would%20like%20to%20book%20a%20free%20coding%20or%20AI%20trial%20lesson.%20We%20are%20in%20Pontypridd.)Free class[Priority demo](/book-demo)[Call us](tel:+919123366161) ## Keep exploring Modern Age Coders ### Related courses and guides - [Coding and AI Classes in Portadown](/best-coding-and-ai-classes-in-portadown) - [Coding and AI Classes in Penarth](/best-coding-and-ai-classes-in-penarth) - [Coding and AI Classes in Ramsgate, Kent](/best-coding-and-ai-classes-in-ramsgate) - [Coding and AI Classes in Paignton](/best-coding-and-ai-classes-in-paignton) - [Coding and AI Classes in Roath, Cardiff](/best-coding-and-ai-classes-in-roath-cardiff) - [Coding and AI Classes in Northampton](/best-coding-and-ai-classes-in-northampton) - [Coding and AI Classes in Smethwick](/best-coding-and-ai-classes-in-smethwick) - [Coding and AI Classes in Tamworth](/best-coding-and-ai-classes-in-tamworth) - [AI and Programming Classes in Dewsbury](/ai-and-programming-classes-in-dewsbury) ### Learn more - [Vibe Coding and AI Agents Classes in Kings Heath](/vibe-coding-and-ai-agents-classes-in-kings-heath-birmingham) - [Vibe Coding and AI Agents Classes in Rhyl](/vibe-coding-and-ai-agents-classes-in-rhyl) - [Vibe Coding and AI Agents Classes in Port Talbot](/vibe-coding-and-ai-agents-classes-in-port-talbot) - [AI and Python Academy for Girls, Netherlands](/ai-and-python-academy-for-girls-netherlands) ### Free resources - [AI & Machine Learning Tutorial: Basics to Deep Learning](/resources/ai-and-machine-learning) - [Generative AI](/resources/ai-and-machine-learning/generative-ai-and-diffusion-models) - [Large Language Models](/resources/ai-and-machine-learning/large-language-models) - [MLOps and Model Deployment](/resources/ai-and-machine-learning/ml-ops-and-model-deployment) ### From the blog - [AI & Machine Learning Guides](/blog/topic/ai) - [Data Science, AI, and Math: Skills Every Tech Professional Must Learn](/blog/data-science-ai-math-skills-professionals) - [Why Do AI Models Make Mistakes? 5 Reasons, Tested](/blog/why-do-machine-learning-models-make-mistakes) - [10 Safe AI Tools Your Child Should Be Using for Homework in 2026](/blog/safe-ai-tools-for-kids-homework-2025) ### Start here - [Try a free trial class with a Modern Age Coders mentor](/free-trial) - [About Modern Age Coders, teaching since 2020](/about) --- *Canonical: https://learn.modernagecoders.com/best-coding-and-ai-classes-in-pontypridd*