A key aspect of the Gates Foundation's U.S. efforts involves an overhaul of the country's education policies at both the K-12 and college levels, including support for teacher evaluations and charter schools and opposition to seniority-based layoffs and other aspects of the education system that are typically backed by teachers' unions. It spent $373 million on education in 2009. It has also donated to the two largest national teachers' unions. The foundation was the biggest early backer of the Common Core State Standards Initiative. COUNT 4
QSN1 what is a key aspect of the gates foundation in the US ANS1 A key aspect of the Gates Foundation's U.S. efforts involves an overhaul of the country's education policies at both the K-12 and college levels QSN2 What do these efforts include ANS2 including support for teacher evaluations and charter schools and opposition to seniority-based layoffs QSN3 how much did it spend in 2009 ANS3 It spent $373 million on education in 2009. QSN4 It was an early backer of what  ANS4 The foundation was the biggest early backer of the Common Core State Standards Initiative.