Prom ^ ^

[decswxaqz]

Nursey school till 7.
Junior school till 11
Secondary school till 16. The first year of secondary school is "year 7" and goes to "year 11". Although it's not to be confused with "First year" going to "Fifth year". The next year is where we get "6th form" from .

That ends compulsory education. Most people go onto college or 6th form. College is not usually classed as a school but as a seperate educational building so to speak. It usually provides more choices for subjects, no dress code (we usually have to wear a uniform at school), and won't really chase you around if you haven't done the work.
6th form is when your school has the means to give you extra education. So you stay at your school and do A-lvls or GNVQs. Usual school rules apply, which means uniform and being there every day (at least in my school). Although we do get free periods so we can do what we want in those.
Both of these are from 16-18. In 6th form, that means each year is split into "upper" and "lower" 6th form.

There are usually parties/balls/proms at the end of fifth year and end of upper 6th form.

Hope that helps