Here's what Santiago's mom sent me after our first session:

"Yuki, I just want to thank you. In just 1 hour, I could already see a difference in Santi, and he just told me that he really liked the way you explain things. He said he doesn't feel embarrassed to say whether he understands or not. He says he finally found a good math tutor with whom he feels really comfortable. Please don't leave us on this journey - we'll do everything possible to work with your schedule. We are very grateful."