NLSA in place since the early 2000s.
Initially conceived as a sample-based instrument, but a census-based approach was adopted in 2008.
Stakes have tended to increase, as schools are required to publish their results since the late 2000s.
NLSA in place since the early 2000s.
Initially conceived as a sample-based instrument, but a census-based approach was adopted in 2008.
Stakes have tended to increase, as schools are required to publish their results since the late 2000s.