This article details an instructional model called Interactive Learning (IL), which contains ten best practices for educators to follow that must be implemented in all lessons. Using these practices can help student achievement tremendously, as evidenced by the example school, which doubled student achievement in three years using these practices.
This article from ISTE discusses how blended learning can be used to bridge the achievement gap for students who don't have access to technology (or who have minimal access) outside of the school setting.