ssm and Krak - you ask the 64,000 dollar question!
How does one know?
How does one know anything in life? How do we know when we are married that our marriage will last the rest of our lives?
We could ask these type of questions over and over again about any subject.
My son and I found a school before we ever knew or heard about the hsbbweb. This is a great resource but can be scary at the same time when you are exposed to horror stories and differing opinions. Use it as a tool but don't become a slave to it or become paralyzed by it. You don't need anyone's reassurance to make the right decision for YOUR family.
How to do it? We listened to our hearts.
We made priorities and we followed them. For us, baseball was a stronger priority than school although school was a consideration. Location also factored into it. For MOST, school seems to be the bigger priority. The thing is, it is a free country. What is right for me is likely wrong for you.
Feel it, touch it, smell it, talk to it, taste it, experience it, visit it, research it, talk to others about it, but most importantly listen to your heart
There are no guarantees but that is what makes life interesting