Here are some things to consider:
* What age are the kids? Teachers in early childhood education focus on language development, while teachers in higher grades teach grammar and writing skills.
* What is their native language? If kids are learning English as a second language, teachers may specialize in ESL instruction.
* What kind of school are they in? In some schools, English is the primary language of instruction, while in others, it might be taught as a second language.
To give you a more specific answer, please tell me:
* What age are the kids?
* What is their native language?
* What type of school are they in?
Once I have this information, I can give you a more accurate answer about how teachers teach kids to speak English.