IPA: /ɪˈliːtɪzəm/
KK: /ɪˈlitɪzəm/
The practice or belief that a small group of people, considered superior in some way, should have more power or privileges than others.
The school's elitism made it difficult for students from less wealthy backgrounds to feel included.
Elitism is formed from "elite" (from French *élite*, meaning chosen or selected) and "-ism" (meaning a practice or philosophy). The term refers to the belief in or practice of a society being led by a select group of people considered superior or more capable than others.
Think of the word 'elite' which means a chosen or superior group, and remember that 'elitism' refers to the belief in the superiority of that group.