What is the difference between the professional training of calligraphy college entrance examination and the usual amateur study?

Only formal professional study can successfully pass the calligraphy professional examination in colleges and universities. However, the calligraphy tutorial classes in today's society are mixed, which can't make calligraphy learning scientific, systematic and professional, and most of them don't meet the standards of calligraphy major in colleges and universities. I hope that candidates will choose rationally.