When I made this for my kids I made the cut per the directions. As I recall the biggest concern I had was damaging the part. Now, I have a low powered table saw and have not used one with a lot of umph, so that may have deluded me into feeling I had control.
One problem I've had with the easel over the 4 or so years we've had it is it's weight! We like to move it out of the playroom when lots of kids com over just to keep the potential mess down, as well as giving them a bit more room to play in. Like any flat surface in your (my) shop, the storage space is great for collecting markers and crayons, so it really doesn't get folded up very often.
oh, btw, we went with the white board instead of chalk board for that side of it.
Dan
There are three ways to get something done: Do it yourself, employ someone, or forbid your children to do it.
-Monta Crane