I am NOT satisfied with his class at all. I have a reason. He should know students' English proficiency levels. My son is completely a novice at English. He doesn't know about English at all. This teacher kept asking my son to read some English sentences. When he couldn't answer his questions, he typed the meaning in Japanese Kanji in a chatbox. My son is just 6 years old. He can't read some Kanji. Lastly, In conclusion, he should be professional and NOT use Japanese that much.