High school students are going to write and practice calligraphy. What copybook is good?

If you just want to write neatly, I suggest you learn from Pang Zhonghua or Si Mayan. If the artistic level is high, you can consider Zou Mubai. In addition, some brush copybooks can also be used for reference. It is recommended to read How Beginners Choose Brush Copyrights (with the names of 46 classic rubbings).