In The Happiest Preschool you find teachers actively playing with students and working on projects, not just reading or lecturing or observing. You hear loud, enthusiastic voices with no one saying, "Use inside voices." You see children engaged in projects they chose that are not imposed. If a child is unruly, you see a teacher go with them out of the room and stay with them until they are ready to come back in. You see teachers focusing on the feelings that lead to antisocial behaviors rather than lecturing about the behaviors themselves.
What you don’t see are rewards or incentives such as crowns, extra privileges, etc. You don’t see kids in time-outs or isolation. You don't see worksheets, formal group time or formal testing. Overall, you see a place of care, excitement, developmentally appropriate expectations, and unforced cooperation and kindness.
One advantage of The Happiest Preschool is that it describes for teachers which expectations of behavior are age-appropriate. Preschoolers are not expected to share, to wait patiently, to sit quietly in groups, or to be silent during transitions. Many preschoolers who are diagnosed with mental illness — or even expelled from preschools — would perform within a normal range if they weren’t burdened by age-inappropriate requirements.