Nope. I just assumed that sensei had told them they could test. As you said before, perhaps I didn't socially engage enough with the other students.And you didn't manage to find out from them what they had done in order to test??
There are lots of people who might get to a certain belt level and than not care to progress any further, that belt level might be first degree or it might not be. There is a guy at my dojo who made it to low brown, the first of the brown belt levels and three levels below first degree, and he doesn't care to promote any more. Nevertheless it was important for him to at least get a brown belt just like it was important for me to at least get first degree.I don't understand why it matters now, especially given that you have not graded further. You have referenced a number of times some kind of plan that involved you getting to first dan by a particular time. If you were never going to grade further, then what did it even matter?? Has this in some way stymied your grand plan for the rest of your martial career? Did you plan to go on to instruct and or open a dojo? Why does any of it matter? Why are we still talking about it?
As for wanting to get a black belt by a certain time period, I had plans in life that depended on it and yes I do plan to eventually teach but I had other plans that relied on it too. I could go on and on but I don't want to bore you but I will say this much for now, one of the main reasons I wanted to get a black belt before I turned 20 is because doing certain stuff such as getting a black belt is what being a teenager is all about.
Now, why this matters and why we're still talking about it is because people are asking me stuff about it just like you did in this post. And Im answering.