<p>Yes, they what they did during my time before I came to the US. Students specialized in major subjects starting with grade 10. Humunaties concentrated students had only 1 hour math, 1 hour biology, 1 hour chem/physics and 6-9 hour literature/philosophy per week. A math-physics concentrated students had 6-9 hours in math, chem/physics per week. They probably have more balance now but still have specialization in HS.</p>