Things you learned in school that are no longer true.

[Syt]

I learned in 1987/88 about USSR and GDR in geographcy class.

[Jacob]

There seems to be a discrepancy between thread title and OP. Many of the items noted so far seem to satisfy thread title but not OP as they were once true but are not true anymore and hence not taught whereas OP talks about things that were once taught either because they were then thought to be true / or the result of a teacher perniciously providing false information.

Like I said, I'm pretty sure the coal production of Kazakhstan is no longer what I was taught it was. In fact, I'm pretty sure it wasn't that, even when I was taught it. But presumably it was true at one point.

[The Brain]

I remember arguing with the sociology teacher that homosexuality was primarily an inborn trait.  He told me I was wrong and to shut up.  I even sited sources.

So he was plainly in denial. 

Just like Antinous.

[CountDeMoney]

At uni, I had a class on audio-visual technology, where I had to learnt by heart a thick dossier on camera, film, TV, audio... tech of the late 1990s. I got an A+. All of that technology is now completely obsolete.

Years ago when I worked as a consultant, I used to testify in court as an expert on video taped evidence.  Who uses VHS technology now, except the occasional inner-city Korean grocer.

All that knowledge, lost like bags of overpriced corn chips in the rain.

[grumbler]

There seems to be a discrepancy between thread title and OP. Many of the items noted so far seem to satisfy thread title but not OP as they were once true but are not true anymore and hence not taught whereas OP talks about things that were once taught either because they were then thought to be true / or the result of a teacher perniciously providing false information.

Agreed.  Most of this is just complaining about bad teachers.

I remember learning that dinosaurs certainly were cold-blooded.  Nowadays, that idea is probably the minority opinion.

[Martinus]

Christian theology.

[Valmy]

Christian theology.

Has Christian theology changed a lot since then?

[Martinus]

Christian theology.

Has Christian theology changed a lot since then?

Dunno, but it is still not true.

[garbon]

I remember arguing with the sociology teacher that homosexuality was primarily an inborn trait.  He told me I was wrong and to shut up.  I even sited sources.

Oh I remember being told in Health class that anal sex was bad as that part of the body was designated as an "out only" area.

[Martinus]

I remember arguing with the sociology teacher that homosexuality was primarily an inborn trait.  He told me I was wrong and to shut up.  I even sited sources.

Oh I remember being told in Health class that anal sex was bad as that part of the body was designated as an "out only" area.

They got that part right.

[grumbler]

Christian theology.

Has Christian theology changed a lot since then?

Dunno, but it is still not true.

What is also still not true is that you can comprehend simple English.  The question isn't "what is not true" but rather "what did you learn as true that is no longer believed to be true?"

[Martinus]

Christian theology.

Has Christian theology changed a lot since then?

Dunno, but it is still not true.

What is also still not true is that you can comprehend simple English.  The question isn't "what is not true" but rather "what did you learn as true that is no longer believed to be true?"

I no longer believe it to be true, so it technically fits the description.

Many examples used in the thread so far (such as homosexuality being a disease/not being an inborn trait) are still believed to be true by some people, just as well.

[garbon]

There seems to be a discrepancy between thread title and OP. Many of the items noted so far seem to satisfy thread title but not OP as they were once true but are not true anymore and hence not taught whereas OP talks about things that were once taught either because they were then thought to be true / or the result of a teacher perniciously providing false information.

Like I said, I'm pretty sure the coal production of Kazakhstan is no longer what I was taught it was. In fact, I'm pretty sure it wasn't that, even when I was taught it. But presumably it was true at one point.

Which is why I would say it meets the thread title but not the OP which seems to be more about things that were taught that we believed to be true but turned out not to be (or were never true but teachers taught them anyway).

[The Brain]

Christian theology.

Has Christian theology changed a lot since then?

Dunno, but it is still not true.

What is also still not true is that you can comprehend simple English.  The question isn't "what is not true" but rather "what did you learn as true that is no longer believed to be true?"

Read the OP.

[Martinus]

Oh well, in that case, it's boring stuff, like Pluto.

We probably got some soft stuff about Soviet Union and the like, but I was 12 when the communism collapsed so we did not really get into any heavy propaganda.