Short answers, pulled from the story.
Nigeria uses a 6-3-3-4 system that divides schooling into six years of primary school, three years of junior secondary, three years of senior secondary, and four years at university. The duration of university study varies by course, with some programs extending beyond the standard four-year model.
International Students' Day falls on the 17th of November commemorating the 1939 Nazi storming of the University of Prague following student demonstrations against German occupation of Czechoslovakia. Germans closed all Czech universities and colleges sending over 1200 students to Nazi concentration camps while executing nine student leaders on that date.
Swedish law reserves the word student for university-level study only while lower levels use elev or studerande depending on context. Sweden allows graduates of upper secondary gymnasium to ta studenten meaning to take the student but they lose that title unless enrolling at university.
Members of the Baháí Faith face official bans from attending Iranian universities to prevent them becoming doctors lawyers or professionals despite Muslim Christian Jewish and Zoroastrian people gaining entry. This restriction exists within a system where compulsory primary education is enforced for children aged six to ten through a five-year cycle defined as basic education.
Finnish first-year university students are called fuksi while French higher education institutions label first-years bleus or bizuths. Italian matricola refers to first-year students with goliardic initiation traditions granting grades from matricola fagiolo colonna to anziano though most distinctions rarely appear outside Goliardia.