@Always_Ask_Quesions – “I find schools or teachers who “simply” teach Torah and derech eretz the best”
Exactly! You find that education the best, therefore YOU should send your kids to such a school.
How do you define “derech eretz”? If it means that when they grow up the children should go to college, get a degree, and that will make them a fine yungerman – many people will not want to send their kids to your school, because college etc. goes against their entire hashkafa.
You might not want to send your kids to a school that teaches that Jews must grow beards (although this is an obligation according to many, many poskim from all sides of the chasidish/litvish spectrum), or a school that focuses on staying separate from the אומות.
Obviously, you can’t find a school that has every single hashkafa exactly the same as yours, which is why you must take an active role in educating your children, but you want a school that fits your derech for the most part.