@Risaa
The Philippines
... we're a remote and obscure collection of islands just a stone's throw from Japan and Korea. (A REALLY long stone's throw, though XD )
@Anh_Minh
That's the system most commonly used for our tertiary-level/college-level schooling... although the school assigns the rooms for specific subjects at specific times of the day.
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I'm just curious... how old is the usual age-bracket of Japanese high-schools? Sometimes, HS students as portrayed in some anime seem older... almost around 17-20 years old. Other times, they seem pretty young: around 13-16 years old.