Tho it wasn't certian people usually celebrate his birthday on April 23 the year he was born is 1564 he died at the age of 52 in 1616 nobody knew when he was born guess no one cared to much about birthdays that much.
The third option is correct: "Art and math are courses architecture students must have on their schedules."
The other two uses the word "their" when referring to a single thing/person. The correct word should be: "Each architecture student must plan his/her high school and college courses carefully." and "Every school of architecture sets its own specific requirements."
