I even avoided the lunchroom and walking trail (trilha)

Eu até mesmo evitava o refeitório e a trilha.

"Have no friends not equal to yourself." Confucius

"Não tenha amigos que não sejam seus iguais." 

"Sempre procure amigos que sejam seus superiores."

"There was another secondary spin off (sub-produto) following on from the fact that he missed many of his Year Six classes to attend all the Maths I and II lessons in the Senior School. Because he had been frequently bored in these classes before, and given that he was a very quick (albeit very untidy) worker, having to make up the work in a reduced time was actually an advantage."

spin-off = sub-produto (algo creado graças a outra coisa)

Um spin-off/sub-produto do seriado "Cheers!" é o seriado "Frazier". 

Um spin-off/sub-produto do casamento dele com dona Maria foi o serviço que arrumou com o pai dela.