supplement to classroom teaching To parents individually as a private, online, homeschooling alternative In 2015, 526 virtual schools in the United States enrolled 278,511 students. Charter management Stride competes with non-profit educational organizations known as charter management organizations (CMOs) that typically run brick-and-mortar schools. Other large non-profits are Imagine Schools (55 schools), KIPP (209 schools), and Cosmos. Multi-state EMOs and CMOs control about a third of the charter school market. K12 provides to online non-profit CMOs including Agora and Insight in Pennsylvania. The company manages state-funded virtual charter schools and hybrid schools in twenty-nine U.S. states and the District of Columbia. In 2015, Stride was CMO (and charter holder) for schools enrolling 44,559 students. Curricula Stride's product line includes courses for pre-K, elementary, middle, and high school grades, online learning platforms, and educational software. All courses provided by Stride Inc. are delivered through Brightspace, a D2L platform. The K-8 curriculum includes core subject areas: math, science, language arts, history, art, music, and world languages. The majority of lessons in the early grades are offline using textbooks, printed materials, and hands-on activities. The learning coach (typically a parent or guardian) is expected to spend three to five hours each day monitoring students' progress, logging attendance, and facilitating lessons. Short answer or multiple choice assessments are given at the end of most lessons in K-8 and are administered and recorded by the learning coach. At the high school level (grades 9–12), students complete all coursework online. Less parental involvement is expected. In high school, teachers monitor student's progress and grade tests and assignments. In addition to core and comprehensive courses, students can choose remedial, Honors, Credit Recovery and Advanced Placement options. Unlike in the K-8 grades, high school courses take place mostly online. Students attend live online classes and have more communication with teachers, via e-mail, phone, and online conferences. In all cases, the school assigns a state-certified teacher to assist the coach and student. The cost to a sponsoring agency depends on the teacher-student ratio selected. Stride offered the Commonwealth of Virginia three plans: a teacher-student ratio of forty, fifty, or sixty to one. Teacher interaction is accomplished through virtual classroom environments using Newrow, a virtual classroom conferencing system by Kaltura, telephone, and face-to-face meetings and events. In hybrid schools, students complete the same curriculum but attend a physical building and participate in classes with other students and teachers. Branding Stride,