I'm an example of that. Started school a year earlier, but could start at 3rd grade (didn't because of emotional development worries etc). Everything was easy,

I'm an example of that. Started school a year earlier, but could start at 3rd grade (didn't because of emotional development worries etc). Everything was easy, nothing required any heavy work. Until I started university. Now everything is at reasonably high level, but I'm not used to studying. But still, I can get by on low grades, so that's what I'm doing. No one will look at them anyway.