Nationally, student performance has been experiencing slow progress. However, results indicate that states with tougher education reforms significantly advance student performance.
In an opinion piece, the New York Times states that teacher evaluation systems and the Common Core have been proven to increase student scores:
Both reforms — or at least the principles behind them — got a welcome boost from reading and math scores released recently by the federal government. Although the nation as a whole still has a long way to go to match high-performing school systems abroad, states that have toughened their teacher evaluations and standards have shown positive results.