Public schools once waited for families to arrive. Caissa K12 treats every empty desk like an undecided voter - and only gets paid when the student comes back.
A Bronx history teacher wanted books his students couldn't afford. Twenty-five years later, the website he built has moved more than $1.6 billion into America's classrooms - one crayon, microscope and field trip at a time.
Stride built a multibillion-dollar business by turning the school building into a service - then stretched that machinery from kindergarten lessons to job credentials. Its next test is whether a sprawling education portfolio can stay personal while operating at public-company scale.