“I’m interested in a computer science degree, but I haven’t touched a textbook since school. What subjects do I actually need to get started?”
If this sounds familiar, you’re not alone. It’s one of the most common questions we hear from career changers and aspiring tech professionals. The direct answer is that while a formal background helps, the door to computer science is more open than you might think, especially with the rise of flexible online learning from institutions like the University of the People (UoPeople), Coursera, and edX.
The core subjects you’ll need are Mathematics and a strong logical foundation. But don’t let that scare you if your academic history is a bit rusty. In this post, we’ll break down the essential subjects for computer science and show you how online platforms are perfectly designed to fill any gaps in your knowledge, setting you up for success.
Why Getting a Computer Science Degree Online Makes Sense Today
I’ll be honest, when I first looked into online degrees, I was sceptical. Would an employer value a qualification from Southern New Hampshire University (SNHU) or a MicroMasters from edX as much as a traditional one? My perspective completely changed when I saw colleagues and friends upskill, change careers, and land fantastic roles—all while learning on their own schedules. The landscape of education has transformed.
Here’s why pursuing this path online is a strategically smart move:
- A Foundation Built on Logic, Not Just Rote Learning. At its heart, computer science is applied logic. A strong GCSE and A-Level (or equivalent) background in Mathematics is highly beneficial, particularly in areas like algebra and calculus. But crucially, it’s the problem-solving skills you learn that matter most.
- The Flexibility to Bridge Knowledge Gaps. Never studied Computer Science at school? No problem. Platforms like Udemy and Coursera are brilliant for taking introductory programming courses in Python or Java before you even apply for a full degree. This allows you to build the necessary foundations on your own time.
- Direct Industry Relevance. Unlike some traditional curricula that can become outdated, online programmes, especially those from industry-led platforms like Udacity and Pluralsight, are built in direct response to market needs. You learn the languages and tools that companies are using right now.
- A Global Classroom at Your Fingertips. Studying online with a provider like FutureLearn or through a degree from UoPeople connects you with a diverse network of peers, instructors, and professionals from around the world. This global perspective is invaluable in the tech industry.
- Demonstrates Self-Motivation. Completing a rigorous online degree or a professional certificate from LinkedIn Learning shows potential employers that you’re disciplined, proactive, and skilled in time management—highly sought-after traits in any employee.
Your Computer Science Prerequisites, Answered
Let’s tackle some of the specific questions you might be typing into Google.
1. Is A-Level Maths absolutely essential for a computer science degree?
While many university programmes strongly prefer it, it‘s not always a strict requirement. Admissions panels often look for demonstrated logical aptitude. If you lack the formal qualification, proving your skills through a foundational maths course on Khan Academy or a certified pre-university programme can often serve as a suitable alternative.
2. Can I do computer science without a physics background?
Absolutely. For most general computer science and software engineering roles, physics is not a core requirement. Your focus will be much more on discrete mathematics, logic, and algorithms rather than the physics principles needed for, say, hardware engineering or game development physics engines.
3. What are the most important GCSE subjects for computer science?
Beyond the core subjects of English, Maths, and Sciences, GCSE Maths is the most critical. It forms the foundational logic you’ll need. A GCSE in Computing or ICT is helpful for exposure, but it‘s not essential, as most degree programmes start from the beginning.
4. Are online computer science degrees respected by employers in 2025?
Yes, overwhelmingly so, provided they are from accredited institutions. Employers now recognise the rigour and self-discipline required to complete degrees from reputable online universities like SNHU or Capella University. What matters most is the accreditation and the practical skills you can demonstrate in your portfolio.
5. I’m a career changer with an unrelated degree; where do I start?
Begin with a single, project-based course. Platforms like Coursera and edX offer introductory Computer Science modules from top universities. This allows you to test your interest and build a foundational skill set without the immediate commitment of a full degree, making the transition far less daunting.
Final Thoughts
The journey into computer science is less about having a perfect academic record and more about cultivating a curious, logical mind. The digital classroom has demolished the old barriers to entry, offering a flexible, credible, and powerful path to a rewarding career. Whether you’re filling in knowledge gaps or diving into a full degree, the tools are at your fingertips.
The digital classroom isn’t the future anymore—it’s the present, and it’s yours to seize.
See It In Action
If you’re still wondering what a day in the life of an online computer science student looks like, this video from SNHU does a brilliant job of breaking down the experience and the support available.
Online College: Day in the Life with Wyatt From the SNHU YouTube channel, this video breaks down the experience and support available to online students, which is perfect for the “See It In Action” section.
Sources
1. edX Official Site: Computer Science MicroMasters® Programs
2. Coursera Blog: “Is an Online Degree Worth It?”
3. UK Government National Careers Service: Computer Scientist