--- title: "Online Coding and Python Classes in Hornsby, Sydney" description: "Live online coding and Python classes for Hornsby Shire children, teenagers and adults, taught by real teachers in small groups or one to one. First lesson free." canonical: https://learn.modernagecoders.com/online-coding-and-python-classes-in-hornsby-sydney source: src/pages/online-coding-and-python-classes-in-hornsby-sydney.html --- > Live online coding and Python classes for Hornsby Shire children, teenagers and adults, taught by real teachers in small groups or one to one. First lesson free. Skip to contentCourse picks for Hornsby ## Starting points for Hornsby learners of every age All four connect to the autocomplete project. A free first lesson decides which suits, with no card needed. [![Scratch Coding for Kids course thumbnail](/images/scratch-kids.webp)Ages 6 to 11Scratch Coding for KidsBlocks, sprites and simple lists, including a guessing game that narrows down a name letter by letter.See the syllabus](/courses/scratch-programming-complete-course)[![Python for Teens course thumbnail](/images/python-teens.webp)Ages 13 to 17Python for TeensPython from scratch: strings, lists, sorting and searching on real local data.See the syllabus](/courses/python-complete-masterclass-teens)[![PCEP and PCAP Python Certification Course course thumbnail](/images/pcep-python-certification.webp)Ages 15 and overPCEP and PCAP Python Certification CoursePreparation for the Python Institute certificates, with every topic written as working code first.See the syllabus](/courses/pcep-pcap-python-certification-course)[![Python Masterclass course thumbnail](/images/python-college.webp)University and adultPython MasterclassA full Python course for adults who want to write their own search and data 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)Hornsby Shire in the Census ## An older shire of houses, degrees and teenagers QuickStats for the Hornsby local government area from the 2021 Census, alongside New South Wales and the nation. | Figure | Hornsby | | --- | --- | | Residents | 151,811 | | Families | 42,716 | | Private dwellings | 55,909 | | Average household size | 2.8 | | Item | Hornsby | NSW | Australia | | --- | --- | --- | --- | | Median age | 41 | 39 | 38 | | Bachelor degree or above, aged 15 and over | 44.2% (54,377) | 27.8% | 26.3% | | Professionals among employed residents | 36.2% (27,084) | 25.8% | 24.0% | | Residents aged 10 to 14 | 7.2% (10,958) | 6.2% | 6.2% | ### Mostly houses 35,868 occupied homes were separate houses in 2021, 69.5% of the total, a little above the state share of 65.6%. ### Teenagers at home The Census counted 9,774 residents aged 15 to 19, 6.4% of the shire against 5.7% across New South Wales. ### Older than average A median age of 41 makes Hornsby two years older than the state, while still home to many school-age children. Census cells carry small deliberate random changes for privacy, so subtotals and totals do not always agree. We reproduce what the bureau published and do not invent totals by summing rows. Signature project ## How few keystrokes pick out each Hornsby school? The NSW Department of Education lists 35 government schools in the Hornsby council area. We sorted their names and built an autocomplete that knows exactly when a typed prefix becomes unique. | Neighbouring names | Shared prefix | Characters | | --- | --- | --- | | Pennant Hills High School, Pennant Hills Public School | Pennant Hills | 14 | | Normanhurst Public School, Normanhurst West Public School | Normanhurst | 12 | | Cherrybrook Public School, Cherrybrook Technology High School | Cherrybrook | 12 | | Hornsby Heights Public School, Hornsby High School | Hornsby H | 9 | | Measure | Result | | --- | --- | | Comparisons needed after sorting | 34 neighbour pairs, not 595 pairs | | Total keystrokes for all 35 schools | 226, against 881 characters typed in full | | Average keystrokes per school | 6.46, against an average name length of 25.17 | | Names settled by a single letter | 4, including Epping North Public School | | Hardest names | 2 Pennant Hills schools, 15 characters each | ### 1. Sort sorted(names) puts names that share a beginning next to each other, so any name's closest rival is always one of its two neighbours. ### 2. Compare neighbours A short loop measures the longest common prefix of each adjacent pair; os.path.commonprefix does the same in one call. ### 3. Add one A name becomes unique one character after the longer of its two neighbour prefixes. A brute-force check over every name confirms all 35 answers. ### Why sorting is enough If two names share their first nine characters, every name that sorts between them shares those nine characters too. So the strongest competition for any name always sits right beside it in the sorted list, and the comparisons drop from one per pair to one per neighbour. That single observation is how real autocomplete boxes, dictionaries and database indexes stay fast. All prefixes and keystroke counts are our own, calculated from the school names exactly as the department publishes them. The project is about strings and says nothing about any school's results, enrolment or catchment. Strings in practice ## Small changes that teach big Python lessons Once the autocomplete works, a few tweaks reveal traps that catch real programmers. | Try this | What happens | Lesson | | --- | --- | --- | | Type "hornsby" in lower case | 0 matches until the names are case-folded, then 5 | Normalise text before comparing it | | Sort "Hornsby High" and "Hornsby Heights" | Heights comes first, because e sorts before i | Sorting compares characters, not words | | Search with bisect instead of a loop | The first matching name is found in a handful of steps | Binary search on sorted text | | Add a new school name | Only its two new neighbours need rechecking | Incremental updates | Strings look simple and hide a lot: capital letters, spaces, punctuation and the order of characters all change results. Building something useful with them, on names a learner recognises, is one of the quickest ways to make Python feel concrete. ### Younger learners A Scratch guessing game that keeps a list of names and removes the ones that cannot match after each letter. ### Teenagers The full autocomplete in Python, with case-folding, bisect and a test that compares it with brute force. ### Adults Prefix search over large lists, then the leap to tries and database indexes used in production systems. The NSW Department of Education, Hornsby Shire Council, Transport for NSW and the statistics bureau publish this information openly and are not connected with Modern Age Coders. The sorting, prefixes and counts are the output of our own scripts. Around Hornsby ## A school from 1850 and the busy northern interchange More facts from the same files and the state school calendar. ### The oldest date West Pennant Hills Public School records its first teacher in 1850, the earliest in the shire. The most recent dates belong to Cherrybrook Technology High School and Oakhill Drive Public School, both 1992. ### A name that crosses a border Mount Kuring-gai Public School sits in the Hornsby council area, not in neighbouring Ku-ring-gai, a useful reminder that place names and council boundaries do not always line up. ### Hornsby Station Transport for NSW recorded 289,451 Opal entries at Hornsby Station in August 2026, twenty-seventh among the stations in its monthly file. Term dates for 2027 NSW Eastern division schools, which include those in Sydney, begin Term 1 on Wednesday 3 February 2027 and end Term 3 on Friday 24 September 2027. Lessons can pause for the school holidays in between or keep running, as each family prefers. Learning ladder ## From guessing names in Scratch to indexing text in Python The ages are suggestions; the trial lesson finds the real starting point. Ages 6 to 11 ### Lists and guesses Scratch projects with lists of names, letters and simple searches. [Scratch Coding for Kids](/courses/scratch-programming-complete-course)[Problem Solving and Computational Thinking for Kids](/courses/problem-solving-and-computational-thinking-for-kids)Ages 12 to 15 ### Python strings Sorting, slicing, comparing and searching text in Python. [Python for Teens](/courses/python-complete-masterclass-teens)[Maths Through Coding](/courses/maths-through-coding)Ages 15 to 18 ### Algorithms on text Binary search, prefixes and tries, timed and tested on real lists. [Problem Solving for Teens](/courses/problem-solving-dsa-masterclass-teens)[PCEP and PCAP Python Certification Course](/courses/pcep-pcap-python-certification-course)University and adult ### Search that scales Indexes, data structures and search tools for large datasets at work. [Python Masterclass](/courses/python-programming-masterclass-zero-to-advanced-college)[Data Structures & Algorithms Course](/courses/data-structures-algorithms-masterclass-college)Coding and AI ## AI completes your sentences already. Why build an autocomplete in Hornsby? Because predicting the next character is where every text AI begins, and building the simplest version shows how much it depends on the list behind it. A language model suggesting the rest of a word is a far larger cousin of our prefix search: it narrows the possibilities with every character typed. Ask an AI assistant to write an autocomplete and it will produce one quickly, but it will rarely point out that capital letters break the match, that sorting order is about characters rather than words, or that two names sharing fourteen characters need fifteen keystrokes. A learner who has built the Hornsby version knows to check exactly those things in any text tool, AI or otherwise. They test lower-case input, look for the near-duplicate names that cause trouble, and ask what list the suggestions are actually drawn from. In 2026 suggestions appear before you finish typing, and the Hornsby learner who has built one understands what is being matched and what is being missed. The longer argument is in [why teenagers should still learn to code in 2026](/blog/is-coding-worth-learning-2026). Delivery ## Brooklyn to Epping North, one lesson In the department's file the most northerly school in the shire is Brooklyn Public School and the most southerly is Epping North Public School, about 23 kilometres apart by latitude, and a live online class reaches both without a drive. ### No travel Wherever in the shire a learner lives, the lesson starts at home and the hour goes on programming rather than travelling. ### In step with NSW Lessons follow the NSW stages and year levels, take breaks with the state school holidays, and can support senior computing subjects. ### A real first class The free trial is a proper lesson; afterwards the teacher suggests a course, level and time, and nothing is billed. ### Matched groups Groups hold fifteen to twenty learners at one level, mixing Hornsby learners with others from different places. ### Twice weekly Two fixed lessons each week, about eight a month, with holiday pauses arranged ahead of time. ### Teachers in India A 5pm Hornsby lesson in summer starts at 11:30am India time, and at 12:30pm there once Sydney leaves daylight saving. Clock changes Sydney starts daylight saving on Sunday 4 October 2026 and ends it on Sunday 4 April 2027, while India keeps the same time all year. Lesson times are always stated in Sydney time so nothing shifts for the family. Fees ## Fees for Hornsby learners Three numbers cover everything. First class**USD 0** The first lesson is free and ends with a recommendation. Group tuition**USD 100** About eight group lessons a month with fifteen to twenty learners at one level. Private tuition**USD 150** About eight private lessons a month with one teacher. Outside India we invoice in US dollars, which means one price for the whole shire and no Hornsby-specific rates. Nothing is charged until a course and time are confirmed after the trial; the pricing page covers holidays, absences and format changes. Request placement[Check availability](https://wa.me/919123366161?text=Hello%20Modern%20Age%20Coders%2C%20I%20would%20like%20a%20free%20Python%20lesson%20for%20a%20learner%20in%20Hornsby.)Reviews ## Families on Google 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 ## Arrange a first Hornsby lesson An age and a favourite topic are all we need. A Year 5 student might begin with a name-guessing game; an adult might jump straight into the autocomplete. ### 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 Hornsby one. [WhatsApp Modern Age Coders](https://wa.me/919123366161?text=Hello%20Modern%20Age%20Coders%2C%20I%20would%20like%20a%20free%20Python%20lesson%20for%20a%20learner%20in%20Hornsby.) Submitted details are used for placement and follow-up. FAQ ## Hornsby Python class questions What Hornsby parents and adult learners tend to ask. ### How many people live in Hornsby Shire? 151,811 at the 2021 Census, according to QuickStats for the Hornsby local government area, with a median age of 41. ### What is a longest common prefix? It is the longest run of characters that two strings share at their start. "Pennant Hills High School" and "Pennant Hills Public School" share "Pennant Hills ", fourteen characters. ### What is the Hornsby autocomplete project? Learners sort the names of the 35 government schools in the Hornsby council area, compare each name only with its neighbours, and work out how many characters each needs before it is the only match. All 35 can be selected in 226 keystrokes. ### Why sort the names first? After sorting, the name most similar to any given name is always next to it, so 34 neighbour comparisons replace 595 comparisons of every pair. ### Does the project judge schools? No. It only uses the published names to practise working with text. Nothing here concerns results, enrolment or catchment areas. ### Can teenagers prepare for Python certificates? Yes. Our certification course prepares for the Python Institute's entry and associate exams, with every topic written and tested as real code before any practice questions. ### Can primary school children learn here? Yes, from age six. Younger children start with Scratch blocks and games, and move to typed Python when reading and typing are comfortable. ### Do you have a Hornsby centre? No. We teach only online and have no premises in Australia. A learner needs a computer with sound and a steady internet connection; our contact number is Indian. ### How much are Python classes for Hornsby learners? The first lesson is free. After that, a group place is USD 100 a month for two live lessons a week, about eight a month, with fifteen to twenty learners, or USD 150 a month one to one. Course, format and time are agreed before any payment. ### What size are the groups? Fifteen to twenty learners grouped by level and goals, not by age or suburb. One-to-one lessons are available when no group suits the required time. Explore Sydney and NSW ## More for Hornsby learners Neighbouring [Ku-ring-gai](/ai-and-programming-classes-in-ku-ring-gai-sydney) has its own page, as does the city-wide [Sydney guide](/best-coding-classes-in-sydney). Students heading for senior computing can read [HSC Software Engineering help](/hsc-software-engineering-help), and the [New South Wales page](/coding-and-ai-classes-in-new-south-wales) covers the state. Book the free class[Book a priority demo](/book-demo)[Message us on WhatsApp](https://wa.me/919123366161?text=Hello%20Modern%20Age%20Coders%2C%20I%20would%20like%20a%20free%20Python%20lesson%20for%20a%20learner%20in%20Hornsby.)Free class[Priority demo](/book-demo)[Call us](tel:+919123366161) ## Keep exploring Modern Age Coders ### Related courses and guides - [Online Coding and Python Classes in Hurstville, Sydney](/online-coding-and-python-classes-in-hurstville-sydney) - [Online Coding and Python Classes in Homebush, Sydney](/online-coding-and-python-classes-in-homebush-sydney) - [Online Coding and Python Classes in Ilford, London](/online-coding-and-python-classes-in-ilford-london) - [Online Coding and Python Classes in Headingley, Leeds](/online-coding-and-python-classes-in-headingley-leeds) - [Online Coding and Python Classes in Inner North Canberra](/online-coding-and-python-classes-in-inner-north-canberra) - [Online Coding and Python Classes in Hayes, London](/online-coding-and-python-classes-in-hayes-london) - [Online Coding and Python Classes in Scarborough, Perth](/online-coding-and-python-classes-in-scarborough-wa-perth) - [Online Coding and Python Classes in Yarra Ranges, Melbourne](/online-coding-and-python-classes-in-yarra-ranges-melbourne) - [Online Coding and Python Classes in Whitehorse, Melbourne](/online-coding-and-python-classes-in-whitehorse-melbourne) ### Learn more - [Python for 10 Year Olds: Real Python Programs, Turtle Art & Mini Games](/python-for-10-year-olds) - [Coding Classes for 10 Year Olds Online: Scratch to Python](/coding-for-10-year-olds) - [Python for 9 Year Olds: First Python Programs, Turtle Graphics & Games](/python-for-9-year-olds) - [Python for Class 6: CBSE Code 166 Python, Turtle, First AI (Age 11)](/python-for-class-6) ### Free resources - [Python Tutorial for Beginners: Complete Guide](/resources/python) - [Object-Oriented Programming in Python](/resources/python/object-oriented-programming) - [Sets in Python](/resources/python/sets-in-python) - [Variables and Data Types in Python](/resources/python/variables-and-data-types) ### From the blog - [Python Tutorials & Guides](/blog/topic/python) - [Armstrong Number: Definition, Full List and Python Program](/blog/armstrong-number-python-complete-guide-examples-code) - [How to Make a Text Adventure Game in Python](/blog/how-to-make-a-text-adventure-game-in-python) - [Fibonacci Series in Python: 7 Ways to Write It](/blog/fibonacci-series-in-python) ### 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/online-coding-and-python-classes-in-hornsby-sydney*