“What if my child gets upset because they do not understand the teacher?”
Typically teachers of young children who are struggling (or upset) will use the child’s native language when/if possible. Most teachers of young children want a child to feel successful, so if English is the child’s native language, and they are lost and confused, it is not effective. All teachers want to ensure a child feels loved, secure, and comfortable with their environment. This reduces the stress and allows learning to take place.