brooklyn might seem pretty typical. reading, writing and when it comes to arithmetic, you ve never seen anything quite like it. live instruction, online instruction and collaborative all in one learning environment. reporter: it is called school of one a pilot program and the pilot program and former math teacher and now an innovator in education. johnny is having trouble, how would this be different in a regular school. reporter: in a regular school the teacher may move on to the next skill. here johnny can stay on fractions and work with a virtuvir virtual tutor. math wasn t always my best subject. reporter: math isn t america s best subject. four out of ten fourth and eighth graders aren t proficient in math. they check the board xhiting to