Hey Slayer. 
No Hard Fellings. 
But if you think 12 hours is Insane. 
My schooling is MEGA INSANE. 
06:45 Am School starts. 12:45 Pm it ends.01:00 to 2:00 Chemistry Classes. 
03:00 to 04:00Pm Physics class, 04:00 to 06:00 regular subjects,and 6:00 to 08:00 PM Maths. 
And then concecutive days EXTRA Classes 
And not one Day. EVERY DAY.