Is nursing school hard??

I am 23 years old and planning on attending nursing school in august. I am also a single mother of a small child, Is lpn school hard?? I'm a little scared about doing the whole school thing again since its been a while since i have been in school because a dropped out of college to have my daughter an now that i'm a single mother i know a have to make a good living for my child. But anyway...... just wondering how difficult lpn nursing school will be.