One: the school's running time, time is the best yardstick to prove whether a school is good or not.
Two: It depends on the business license of this school. Now not everyone can run college entrance examination training institutions, and many schools operate without a license.
Three: It depends on the teaching environment of this school. Don't be confused by the superficial decoration, it depends on the conditions and equipment owned by the school.
Four: It depends on the teachers and experience of the school. You can talk to the school teachers and show them some works to see if their teaching methods are suitable for you.
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