No, that would be *bipolar disorder* which is not the same thing as *clinical depression.*

Major depressive disorder (clinical depression) can also be triggered by a grief incident.

You should probably read Gatto's work, it's a good starting point on what is horribly wrong with our schools in this regard.

That said: I remember science labs quite vividly. They rarely asked you to question anything, and mostly involved following a set of instructions with little room for variation or asking "what if." So today we measure the speed of a bb, rather than asking "how might we do that?" and then investigating, most HS labs I've seen say "we do that by..." with a checklist.

One thing with the gravity comparison though, is that gravity *is* tested in school. Frequently and empirically. Things of different masses are dropped, times are measured, and constants are calculated. Critical thinking and scientific approach can (sadly not necessary *are*, but they could) be taught using gravity as a backdrop. This is a somewhat different matter from evolution.

Not saying that I do not support said theory, but let's be up front about the difference here.