The schools that are "piling things on" may lose veteran teachers, like Sluyter. Here is the full resignation letter Sluyter wrote and sent in February:

I am writing today to let you know that I am resigning my position as PreK and Kindergarten teacher in the Cambridge Public Schools.  It is with deep sadness that I have reached this decision, as I have loved my job, my school community, and the families and amazing and dedicated faculty I have been connected with throughout the district for the past eighteen years. I have always seen myself as a public school teacher, and fully intended to work until retirement in the public school system. Further, I am the product of public schools, and my son attended Cambridge Public Schools from PreK through Grade 12. I am and always have been a firm believer in quality public education.

In this disturbing era of testing and data collection in the public schools, I have seen my career transformed into a job that no longer fits my understanding of how children learn and what a teacher ought to do in the classroom to build a healthy, safe, developmentally appropriate environment for learning for each of our children.  I have experienced, over the past few years, the same mandates that all teachers in the district have experienced.  I have watched as my job requirements swung away from a focus on the children, their individual learning styles, emotional needs, and their individual families, interests and strengths to a focus on testing, assessing, and scoring young children, thereby ramping up the academic demands and pressures on them.  Each year, I have been required to spend more time attending classes and workshops to learn about new academic demands that smack of 1^st and 2^nd grade, instead of Kindergarten and PreK.  I have needed to schedule and attend more and more meetings about increasingly extreme behaviors and emotional needs of children in my classroom; I recognize many of these behaviors as children shouting out to the adults in their world, “I can’t do this!  Look at me!  Know me!  Help me!  See me!”  I have changed my practice over the years to allow the necessary time and focus for all the demands coming down from above.  Each year there are more. Each year I have had less and less time to teach the children I love in the way I know best—and in the way child development experts recommend. I reached the place last year where I began to feel I was part of a broken system that was causing damage to those very children I was there to serve.

I was trying to survive in a community of colleagues who were struggling to do the same:  to adapt and survive, to continue to hold onto what we could, and to affirm what we believe to be quality teaching for an early childhood classroom.  I began to feel a deep sense of loss of integrity.  I felt my spirit, my passion as a teacher, slip away.  I felt anger rise inside me.  I felt I needed to survive by looking elsewhere and leaving the community I love so dearly.  I did not feel I was leaving my job.  I felt then and feel now that my job left me.

It is with deep love and a broken heart that I write this letter.

Sincerely,

Suzi Sluyter