<human>: Question: It was an early backer of what
Answer: 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.
 Is the question answered in a satisfactory fashion?

OPTIONS:
- yes
- no
<bot>: no