<p>Here are some of the online classes that we’ve used:</p>
<p>Art of Problem Solving
[Precalculus</a> Course](<a href=“http://www.artofproblemsolving.com/School/courseinfo.php?course_id=precalc]Precalculus”>http://www.artofproblemsolving.com/School/courseinfo.php?course_id=precalc)</p>
<p>The Potter’s School (Christian)</p>
<p>[Course</a> Finder](<a href=“http://www.pottersschool.org/course/list]Course”>StudyPlace Enroll)</p>
<p>University of Missouri</p>
<p>[Online</a> High School | Online high School Diploma | MU High School](<a href=“http://muhigh.missouri.edu/]Online”>http://muhigh.missouri.edu/)</p>
<p>MIT OCW (free)</p>
<p>[MIT</a> OpenCourseWare | Free Online Course Materials](<a href=“http://ocw.mit.edu/index.htm]MIT”>MIT OpenCourseWare | Free Online Course Materials)</p>
<p>Coursera (free)</p>
<p><a href=“https://www.coursera.org/[/url]”>https://www.coursera.org/</a></p>