I am only taking high school biology. Can someone please explain meiosis to me? Thank you?

You are asking this question in the wrong place. Go over to the Science section and ask it in the biology or ecology subsection and you will get plenty of answers.In fact, there are probably plenty of answers in the archives right now - all you need to do is go up to the top of the page and type in meiosis in the "Search for questions" line!