Thanks!
"Is correct" works.
"The office" is the office for the school (elementary, middle school, or high school). There at a minimum will be found the secretary and principal, plus sometimes a counselor and possibly vice principals. Large schools in the USA may have several secretaries and a number of counselors.

More fully:
Ожидания в классе - classroom expectations
Every teacher has classroom rules or "classroom behavioral expectations." Classroom rules probably translates to either правила класса or Правила в классе, right?