793x911pxschool bell with autumn leaves, 1 September school bell, bellflowers and leaves, school bell decoration, educational autumn, back-to-school bell, festive school bell design
1280x534pxKnowledge Day celebration, 1 September school event, red and white school symbols, autumn education festivity, fall classroom decorations, festive academic startup, international school kickoff
800x460pxKnowledge Day, September 1st celebration, school start event, autumn leaves, educational graphics, festive school day, back-to-school theme
