I don’t know why they assume that switching to a local school will give you a higher GPA. That is very foolish thinking. There are many factors that go into individual grading including how hard individual teachers grade. There are no guarantees that your GPA will go up if you transfer.
As far as questioning the importance of school - don’t. Just do well and appreciate the value of education. Maybe if you stopped questioning it your parents would stop wanting to move you to a different (assuming free) school? I certainly wouldn’t want to pay tuition if my kid was complaining about it.