How could schools modify classroom observations to alleviate teacher stress and retain their staff?

Teachers frequently list classroom observations as one of their top sources of stress also affecting teacher retention. 

In a recent study, 41% of National Education Union members indicated that they intended to completely leave the sector, indicating that there may be a “significant degree of churn” in the profession. It may be simple to understand why teacher retention and recruitment are making news when you combine classroom observations with the pandemic’s effects on classroom behaviour and learning.

How might schools address this to raise morale, improve standards and keep their staff?