Middle School
High School
Trade Studies
College Graduate
Post Graduate
In terms of level of education, what does "trade studies" mean?
Trade Studies would be the pursuit of a vocational education at a Vocational School The word 'trade' refers to a skilled manual labor job and vocational schools are schools that train students to do those jobs. Some examples of trades are plumbing, electric, auto and diesel mechanics, carpentry, etc. A trade school might also teach some business skills such as accounting, so that a graduate would be able to run a business.
Your question shows Trade Studies placed appropriately within the hierarchy of education levels. A student at a Trade School, or Vocational School, would probably be expected to have finished high school, but not to have gone to college. A trade school would train a student to go directly into the job market without going to college, so it is often the highest level of education that people reach before starting to work.