Turnover costs every student in the grade.
Eight years of New York City data on over 850,000 student observations: in grade levels with higher teacher turnover, students scored lower in English and maths. The harm went beyond the quality of who left.
Continuity is part of quality. Prism keeps decisions and lessons, so they don’t leave with the person.
Ronfeldt M., Loeb S., Wyckoff J., “How Teacher Turnover Harms Student Achievement”, AERJ 2013




