Answer:
Dear Dad,
I wanted to talk to you about why I like my new school better than my old one.
Firstly, the teachers at my new school are really nice. They help me understand things better, and I'm doing well in my classes.
Secondly, there are lots of fun activities like clubs and groups I can join. I'm in the debate club, and I help out in the community. It's fun, and I'm making new friends.
Lastly, everyone is friendly at my new school. I feel like I belong, and that makes me happy.
I hope you understand why I like my new school. It's been a positive change for me.
Love,
[Your Name]