I'm sure this will vary for many people depending on their schools, where/when they were taught, and the like, so I'm interested to see what others' experiences have been with this.
I'm also curious about what resources some have used to learn better research skills & media literacy (and found useful) if their school didn't adequately teach either (or they may have whiffed on it at the time).
In France and other countries around speaking French, college is middle school. 11-15y old something like that.
According to Wikipedia, in most countries it's high-school or secondary education.
In the US and maybe other it seems to be a synonym of university.
Here in Australia it can be used for post-high school vocational education, but it can also be used for residential premises attached to a university (but not the university itself). Of course, there's some American language import here.