A proper blackboard with proper chalk, such as Hagoromo chalk, is far superior to and cleaner than the best whiteboard. In general, even non-Hagoromo chalk can

A proper blackboard with proper chalk, such as Hagoromo chalk, is far superior to and cleaner than the best whiteboard. In general, even non-Hagoromo chalk can be brushed or washed off, unlike dry erase marker dust that gets on everything and can stain. Also, I personally dislike the lack of friction when writing with dry erase markers.