(historical) elementary school, national elementary school

teacher

a cautionary tale, an example of what not to do / a person who serves as a living example of what to avoid

a grandfather

(collective) nationals (subject)

(chiefly women's speech) first person singular pronoun: I, me

school (institution dedicated to teaching and learning)

(polite) first-person singular pronoun: I, me

a personal or private matter / (by extension) selfishness

(formal) first-person singular pronoun: I, me