After reading through various threads, I started getting confused as to various school systems, so perhaps we could share our school system to simplify things...

We start at 4 or 5 in Primary 1 (P1), and stay for 7 years until about 11 through to Primary 7 (P7). doing the 5-14 curriculum.

Then we go to Secondary School and are sorted into four Houses, and start S1 (First Year), and finish the 5-14 curriculum after S2 (Second Year) and start eight Standard Grades in S3 and S4 (main exams in S4, about English GCSE). In S5, we start five Higher Grades or can do lesser certificates as well (between English AS and A levels), then in S6 we elect the Head Boy and Girl and the Vice Captains, and study for up to five Advanced Highers for but most do three, for one year(above English A levels, about 1st year of university).