Is the Han dynasty a great dynasty to write about for school?

Yes, it is a great dynasty.
The system of prefecures and counties was completed in this dynasty.
It is the first time that all the Han nationality in country united together. The idea of nationality first appeared in people's mind.
In this dynasty, many young and gifted people got their positions in governments and anticipated in the control of the country. These are all I know about this dynasty and I hope it can help you.

Yes, because it has a lot of interesting subjects in it, and because it was a dynasty full of developments.