when did i start school uk

Children must stay in full-time education until they reach school leaving age.
Children born between 1 April and 31 August can start the September after they turn 5.

Learn what to look for when choosing a kindy and how to get there.
Kindergarten (kindy) is a part-time educational program available to children in the year before school.

Guidance on how to apply can be found here.
See the table below to check when your child can start school.

Information for parents about applying for school places starting in September 2021
Find out about applying for grammar (selective) schools in Essex

References:

http://www.earlyyearscount.earlychildhood.qld.gov.au/kindy-calculator/
http://www.shropshire.gov.uk/school-admissions/apply-to-start-or-transfer-school/starting-infant-or-primary-school/
http://www.essex.gov.uk/topic/admissions
http://www.adamsmith.org/blog/killing-the-case-for-comprehensive-schools