K12 Academy is an online school that offers classes for fourth grade as well as other grades. Another online school with similar offerings is Connections Academy. Both are available anywhere in the United States, with many states offering a tuition-free option.
K12 Academy and Connections Academy are online schools that partner with many states to offer free public charter schools. A student who lives in one of these states receives the full curriculum and any necessary materials at no cost. A student who does not live in a state with the public charter-school option can enroll as a private-school student, which requires tuition payment.