What’s the Difference Between AS and A Level?
What’s the Difference Between AS and A Level?
Created:Updated: 14-September-2025
Not sure whether to take an AS or go straight for the full A Level? Here’s how they differ in depth, assessment and UCAS points—so you can choose what fits your plans.
What is an AS Level?
AS stands for Advanced Subsidiary. It’s a standalone qualification that typically covers about half of the full A Level content.
- Usually completed in one year.
- Assessed by exams at the end of that year.
- Useful as an extra subject or if you want to test a subject before committing to the full A Level.
See all A Level and AS subjects offered online.
What is a full A Level?
A full A Level is the two-year Advanced Level qualification, assessed mainly by exams at the end of Year 13 (or your chosen exam series if studying online).
- The standard route to UK universities.
- Carries more UCAS points than AS.
- Covers the full specification in greater depth.
Key differences at a glance
- Length: AS ≈ 1 year; A Level ≈ 2 years.
- Depth: AS is ~50% of the full content; A Level covers the complete specification.
- UCAS: AS carries fewer points (e.g., A at AS = 20 points) than A Level (A* = 56, A = 48).
- University entry: Most degree courses require full A Levels; AS can support but rarely substitutes.
- Assessment: AS and A Level are separate qualifications—you don’t need to sit AS to take A Level.
Read The Uni Guide’s explainer on AS and A Level structure.
Can you take AS and A Level separately?
Yes. You can complete an AS on its own or move on to the full A Level later. Since reforms, AS results do not count towards your final A Level grade—they’re independent qualifications.
Frequently Asked Questions
Can I get into university with just AS Levels?
Most universities require full A Levels. AS Levels can strengthen an application or provide additional UCAS points, but they rarely meet standard offers alone.
Are AS Levels easier?
They cover less content, but assessment is still at an advanced standard. They’re a good way to explore a subject before committing further.
Do I need to take AS before A Level?
No. You can go straight to the full A Level. AS and A Level are assessed separately.