I have a lot magic school bus books, both as in picture book and chapter
book.
The picture books are in Chinese. My 6 year old absolutely loves it. It's a
very good way for him to work on his Chinese.
On the other hand, he is not that into the chapter books. Maybe it's
beacause his reading level is not there yet. Just to compare, he won't put
Wimpy Kid down, but won't read MSB unless I read it to him.
My son's teacher said it's very important to work on non-fiction reading
materials. MSB is a good starting point and I think it's a good combination
of fiction and non-fiction.