An "educated opinion" refers to having a viewpoint or belief that is formed by knowledgeable and well-informed understanding of a topic through learning, research, or experience. Full definition
Ive read the books just so i can make educated opinions on these kind of things. (rottentomatoes.com)
This section addresses those complexities by providing factual information and educated opinion about animal issues and by exposing the hypocrisy, lies, and violent acts of the animal rights movement. (naiaonline.org)
I knew this would be a pivotal moment in his learning career, helping him apply history to the present day and form educated opinions surrounding controversial topics. (inspiredteaching.org)