In addition to grades, these headband readings add additional pressure to kids. Forcing kids to improve their grades at the cost of their mental health is unacceptable.
This sounds like the status quo of many educational systems worldwide. It's very depressing to me. Obviously some countries are worse than others, but even the US isn't great compared to say, Nordic countries.
It's easier to criticise other countries' education systems, but for some reason we try to avoid criticising our own.