Powerpoint Presentation Cleaned Up and Properly formatted.

I need my powerpoint presentation to be clean up, properly, and presentable. I have the powerpoint built with the content, I just need it to look far more professional than it now does. I would like for our school district logo to be inserted throughout the pages as well. I just need it to look beautiful, professional, and consistent throughout.
I need for slides 10-23 to have sort of the same type of look and format as slides 1-9. For some reason, I could not get slides 10-23 to format the same as slides 1-9.