I think it is ok to take your child back for a year. I did that briefly for my child when he was only in 1st grade. I asked his teacher to give us a homework/study packet and you can just teach your own child in Taiwan, complete the packet. I don't view America's 3rd grade as difficult, although you might need to spend time to strength your child's essay writing/composition skills, which might be more difficult for you to "teach" if you don't feel comfortable writing English essays. Math, science, reading, etc. should all be fairly trivial to master and try to teach your child. I view what's more difficult is teaching your child to be responsible, find answer him/herself, etc. At 3rd grade, unless you are able to keep up your child's Chinese, I do not think it's easy to attend a regular elementary school in Taiwan. I had to help my own child's "homework" while he was in Taiwan. He can do them, IF I read the problems to him, his mastery of ㄅㄆㄇㄈ is insufficient to do his Taiwan 1st grade's homework in a reasonable amount of time. He already got excuse from writing all those Chinese characters. For my 3rd grade child, in USA, most of our time is "wasted" on forcing my child to look for wrong answer on his homework assignment and correct them, because he's so careless and I am not supposed to point to him which problem he did was wrong. I can only say which page has wrong answer and he has to check them for the wrong answer(s) and correct it(them).