

I like it a lot when I don’t need a full IDE or a terminal editor (which I use micro for).
The folding in Kate isn’t bound to a keyboard shortcut by default, but you can bind the katepart > Toggle current node
in settings > configure keyboard shortcuts
. It’s also available via mouse on the left side.
There are basically only general high schools in the US with two small exceptions: religious schools that teach religious studies in addition and STEM magnet schools that have a bit better science/math programs.