In color theory, a purple is defined as any non-spectral color between violet and red (excluding violet and red themselves). The spectral colors violet and indigo are not purples according to color theory, but they are purples according to common English usage since they are between red and blue.
Apex Learning was started in 1997 by Microsoft co-founder Paul Allen on the idea that online courses and test prep, which were already succeeding in higher education, could be applied to K-12.
From Wikipedia, the free encyclopedia. Apex Learning, Inc. is a privately held provider of e-Learning solutions for K-12 education, offering online courses in mathematics, science, English studies, social studies, Romance languages, the fine arts, health and physical education, and Advanced Placement. 1 History.