Obligatory : primary and secondary education (from ~5 years until 16 years).
At age 16, students take their GCSE's (General Certificate of Secondary Education)
After that: school is optional.
Girls by their lockers in a Post-primary school in Dublin
the school years in the UK are split into key stages as follows:
Key Stage 1: 5 to 7 years old
Key Stage 2: 7 to 11 years old
Key Stage 3: 11 to 14 years old
Key Stage 4: 14 to 16 years old
Stages 1 & 2: Primary school Stages 3 & 4: Secondary school
A primary school classroom somewhere in Ireland.
In the middle of each term there may be a short holiday called half-term or midterm and is a few days to a week long.
Compulsory subjects: Literacy and Maths
Science
Design and technology (ICT)
History
Geography
Art and design
Music
Physical Education
Religious education
Foreign Languages
Citizenship
Obligatory subjects: English, Irish, maths and science.
Physical Education, Art, German, French, Spanish, Italian, Latin,Music, Business Studies, Technology, Home Economics, Materials Technology (Woodwork, Metalwork), History, Geography, Civic Social and Political Education (CSPE), and Religious Education.
students sitting their GCSE exams
Example from a school in Westminster, London.
Queen Elizabeth II visiting a Primary School in London
Students in a Secondary School in Glasgow