I was a Boy Scout during my Primary school(age:7-12).
When I was in Secondary school(age:13-17), I joined the Military Cadet, but only lasted for a year before it got disbanded, due to not enough members. Then I joined the Scout again.
How do you schooling class grade works?
In Malaysia, Primary school is for children age 7 til 12, and the classes are called Primary One until Six.
After that, we move on to Secondary school, for teenagers age 13-17, and the classes called Form One until Five.
There an additional class for Secondary school, which is Form 6(2 years). This is optional, thou. Once you graduate Form 6, you can directly apply for degree course in local universities, instead of having to take diploma 1st.
Mostly after Form Five, the students either continue for higher education at university or work.