Yap, they do need tutoring on writing

Because it's not the major language used at home! Those kids usually suffer from poor writing in English. They got no structure, poor grammar and lack of organization. Basically, Chinese spoken environment at home interferes badly with kids' English expression. Those kids are not good in English expressions because they have different mother tongues. It's even more obvious on Spanish speaking students. They have difficulty understanding the nuances in English. Some kids don thick accent so they have difficulty learning phonics.