Certified homeschooling

Does anybody know of a good certified site for homeschooling where I can get the video lectures and practice exercises created by licensed teachers? I need for math and science. Thanks.

I and my husband found Lernsys homeschooling Academy on the web, it’s a great homeschooling where they give step by step explanations. And also the video courses created by licensed teachers. We got only for math http://lernsys.com/en/5th-grade-math-course. There are so much more you can look up, check them out.