House Republicans ironically named their No Child Left Behind reauthorization bill the Student Success Act, which attempts to gut our public education system and take vital funding away from the neediest students. This bill is paving the way for the privatization of education through the expansion of voucher programs.
The notion that we can judge success after one or two years is simple ignorance. Test scores can be valuable to students, but education is far more than a few dozen tests in Math and English. Education is not naturally a part of politics, and when politicians get involved in the details, they inevitably make a mess.
RCTs are important. They are an outstanding tool that researchers have to obtain better insights. However, RCTs need to be designed better: we need more intervention arms, better control groups, better definition and measurement of other possibly affected behaviors, and longitudinal designs including follow-ups to evaluate long-term effectiveness.