Surprisingly good!
Maybe I enjoyed it so much because my grandfather taught at Opportunity School in the 1940s and'50s. And, I recognized many of the names; I even knew some of the people who were mentioned.
Interesting/odd fact: She has several possible birthdates.
p 17: Emily was a pragmatist. She addressed the immediate needs of others, without passing judgment—then reflected on ways to alleviate the underlying problems.
p 38: Each morning, Miss Griffith wrote a message on the chalkboard beside her front hall desk. One of her favorites was "You Can Do It" — an encouraging reassurance to her staff and students alike. Emily chose teachers much like herself, teachers with experience in one-room schoolhouses or other circumstances requiring mastery of individualized instruction for students of all ages and abilities within the same class. Opportunity School teachers had to be flexible, versatile, adaptable, and ingenious.
p 76: "Give a pupil an assignment he can do so he will have a sense of joy and accomplishment," she recommended before challenging him with completely new material."
Some repetition that could have been edited out.