The current study can not draw causal conclusions, but altering the structural characteristics of schools associated with higher suspension rates should be considered in future reform efforts. (brookings.edu)
Some of the approaches are «evidence - based,» meaning they have been the subject of evaluation research that can support causal conclusions about their effectiveness. (educationnext.org)
In that case, it is essential to compare teachers serving similar children to draw any valid causal conclusions. (carnegieknowledgenetwork.org)