Students are failing AP tests because the College Board can’t handle HEIC images

Here's a crazy idea: If your whole web site is based around a high stakes interaction, especially with a time limit, put a dress rehearsal into the registration process.

If someone wants to make an account to register for a test, ask them to upload a picture of anything. A signature. The wall. Their face. A cat. Use the same framework for finishing the test that you used for this interaction. So if for instance you've broken the submit button on mobile Safari, that gets sorted out before the Big Day.

Some other comments [1] noted that they did -- they had a demo site, it was just hobbled by not actually doing all the same things it would do on test day. So students tested their method out, it looked right, and they repeated it on the test day only to have it fail there.

[1] https://news.ycombinator.com/item?id=23261511