I found LPN school pretty challenging even with being an EMT for 15 years and a CNA for a few years. RN school was a bit easier for me, since it built on my LPN knowledge. But in some ways it was harder, being a LPN and having a different scope. I think both are difficult in their own ways.
LPN school was M-F 40 hours/week for 10 months. So that in itself was intense. Once we started clinicals, we had those 3 days/week, 7 hours long. RN school was different, I went part time and by the time I got to nursing school, I only had to go 2 days/week. One clinical day and 4 hours of class.
Personally I think comparing the two are like comparing apples to oranges.
I thought about going the Excelsior route, but since I was working in LTC, there were many skills I needed to learn (i.e. IV). I also didn't want all my hopes riding on one weekend clinical.
Forgot to add - I thought RN school would be a piece of cake given I already had my LPN..yeah I was wrong.