[mywittyname]

It does gracefully handle invalid formats. The problem that students did not follow the directions provided on how to take pictures in an appropriate format. Instead they tried their own hacks, such as changing the file extension.

Another user here claims their daughter was informed repeatedly before the test that HEIC was not supported and given instructions on how to change their phone settings to ensure comparability. This is confirmed in the article:

> though it does link to the College Board’s website, which instructs students with iPhones to change their camera settings so that photos save as JPEGs rather than HEICs.