"This is a union busting tactic. All of this is. Vouchers, charter schools standardized testing, and teacher evaluation schemes were all created with two purposes in mind: destroy the teachers' unions and privatize education. The end goal was 'dismantling tax-supported public education in urban areas' (Rooks 2017).
From "The Industrialization of Education: Phase Three, 1992-Today", see the whole piece, and find Phases One and Two on our website and blog.