Former New York Times writer Jay Caspian Kang shares that while the Gates Foundation will be investing over a billion dollars into Math Education, there is still a lot of dissent on what helps students learn and retain Math.
One idea comes from Escondido, California which homogenized Math for 9th and 10th graders, allowing juniors to choose their path  future STEM students are Calculus bound and others head into a statisticsbased courses. But critics are "concerned that the system might reinforce inequality, with the statistics track being considered the “pathway for students of color.”
Other ideas besides sequencing include tutoring, using digital tools (such as Zearn) and "developing curricula and classroom materials that will aim to help teachers make Math both accessible and challenging".
New Yorker article on California's Math Framework
Alan Schoenfeld's article abstract Why Are Learning and Teaching Math So Difficult?
Should High Schools Rethink How They Sequence Math Content
Jay Caspian Kang's Part 1 on How Math Became an Object of the Culture Wars
