This would be a great exercise for primary school kids. Touch typing is an important skill and once it's learned it's with you forever. On a platform like this they can also practice reading and comprehension, and the teacher has a way to ensure that the reading material was indeed read. Ideally it'd be coupled with some comprehension questions to make sure the kid didn't go on autopilot.
I'm not an expert in pedagogy though so take that with a grain of salt.
I'm not an expert in pedagogy though so take that with a grain of salt.