How school systems can support teachers and build a more positive school environment?

why teachers are currently leaving the profession? 

9 of 10 teachers hired each year are replacing colleagues who left the profession? And 2/3 of those colleagues are leaving before retirement?   

what percentage of schools met the ratio of 1 school counselor to 250 students recommended by the American School Counselor Association? 

how many youths will be diagnosed with a mental health condition in comparison with other conditions?

What the “crisis of our time” is for public health?