卒業, そつぎょう
Takes suru, Intransitive
1. graduation, completion (of a course)
2. moving on (from), outgrowing (something)
3. leaving (a group, company, etc.), quitting
彼は学校を卒業したあと、ロンドンへ行った。
だって
Conjunction, Colloquialism
1. after all, because
2. but
Particle
3. even
4. too, as well, also
5. they say, I hear, you mean
子供にだってそんな事は分かるよ。