Nyūsatsu no gakkō
学校にいた is how you say I was at school in Japanese.
all Japanese food is a work of art, or so the food critics say but mainly Japanese food art can mean that it looks like a work of art, like it usually does, or that it tastes scrumptious
there is no such thing as The art of death blows. you can't just make up random phrases and expect them to be translated to japanese.
gakko no kamoku
offre is how you say tender
l'école d'art
Kurai kage gakkō
A school's "sports day" is called 運動会 (undoukai) in Japanese.
'Welcome to school' would be学校へようこそ (gakkou e youkoso) in Japanese.
Dojo, pronounced dough-joe.
Utsukushii neeru aato 美しいネールアート
Translated to: "escuela de arte."