Why Test Prep is Important for American Top School Admission

I need a 25-30 pages thesis, I have written a few pages but my professor wants at least 25 pages with a lot of graphs, chart, interviews and cites all sources. I run Test Prep center in China & Hong Kong. Most of my students have rigors SAT/ACT results and go to very top American colleges! That’s why I pick this topic! Can you help to do a thesis with this topic?