Matriculation differences between students who get in at different grade

<p>Any statistics report or information about the matriculation differences between students who get in boarding school at fresh/sophomore/jurior/senior year ? Particularly at top prep schools. </p>

<p>I had a chat with few parents on this topic but some debates kept looping within if top prep schools only accepted high caliber, potential ivy material jurior/senior students. Did students really get fine education/influence from school within 1 or 2 years or the prep schools are just their jump board to top colleges ? </p>

<p>Can cc parents provide your experience and viewpoint ? or Can transfer students tell your thought about differences between you and your peer among learning, maturity, EC and all aspects ?</p>