I have a question.  When does the teacher start to teach how to answer in full  sentence and about how old are students can make a full sentence? Also, what kind of training would it need to be done for them?
When I talk to parents as a cordinator at English School, parents often tell me that my kid only answer one simple word even though it is not Yes/No question.
I'm having difficulty in answering back to them.
That'd be great if you answer these questions.
Thank you
Sincerely