A couple years ago, I made a chart of what number of points corresponds to what level. The threshold for level 21 is 17,000 points. Since I have 17,028, I think I must have leveled up on Thursday or Friday. I didn't do any Dutch lessons on Saturday, and I did one (and earned 10 points) early this morning, so on Friday I had 17,018 points. But I can't remember how many lessons I did on Friday. Either I'd already leveled up on Thursday and did only one lesson on Friday or I did two lessons on Friday and those 20 points pushed me into the next level.
