<p>I don’t participate in this forum as much as I used to, since both my kids have completed the boarding school admissions process and our family's focus has shifted to college admissions. But I’d like to do a data-dump before I go. </p>
<p>Here is some interesting data analysis for highlighting Hidden Gem boarding schools-- mathematical gleanings from noticing some statistical anomalies in SSAT vs SAT scores, admit rates & endowment size . Below is one analysis for applicants who are applying for 10th grade or higher. To see all the different lists, please visit @twinsmama’s thread from last year (see posts #38 to #77):<br>
<a href="http://talk.collegeconfidential.com/discussion/comment/17098355#Comment_17098355">http://talk.collegeconfidential.com/discussion/comment/17098355#Comment_17098355</a>
The poster @SharingGift is also a numbers-cruncher and has also posted a number of interesting data analyses.</p>
<p>Edited from one of my posts from last year’s admission cycle. These are 2012-13 numbers, so take them w a grain of salt:</p>
<p>Legendary bank robber Willie Sutton supposedly said he robbed banks "because that's where the money is."</p>
<p>Well, one rational approach to deciding which schools to pursue is to determine which ones actually have the most available slots for new students. All schools have plenty of slots for 9th graders, but after 9th grade the picture can change dramatically.</p>
<p>When formulating a list of schools for GMTson2 for 10th grade admission, I looked closely not just at admit rates and SSAT scores, but at how many slots were available for new 10th grade boarders. Some schools are particularly difficult for 10th grade boarding applicants: Thacher, Cate, St.Andrews, Groton-- too few available slots. We just didn't bother with these. You can apply this same logic to admission for even higher grades.</p>
<p>While the best source of data on the number of kids in each grade comes straight from the school’s website, you might be able to find the data for some schools on this useful U.S. Dept of Education website (when it's working...)
<a href="http://nces.ed.gov/surveys/pss/privateschoolsearch/school_detail.asp?Search=1&SchoolName=groton&NumOfStudentsRange=more&IncGrade=-1&LoGrade=-1&HiGrade=-1&ID=00603075">http://nces.ed.gov/surveys/pss/privateschoolsearch/school_detail.asp?Search=1&SchoolName=groton&NumOfStudentsRange=more&IncGrade=-1&LoGrade=-1&HiGrade=-1&ID=00603075</a></p>
<p>This is my estimation of the approximate number of new 10th BOARDING boys or girls admitted (i.e. it's already divided by 2), w yield already factored in. Do NOT take these numbers literally. Just use them as rough indicators of whether a school has plenty of slots or few slots. This is not an exhaustive list. It only includes coed schools w low % of day students and have avg SSAT scores above 65% percentile.</p>
<p>66 Berkshire School
66 Northfield Mount Hermon
56 Kent School
55 Loomis Chaffee
47 Taft School
41 Phillips Academy
40 Deerfield Academy
39 Phillips Exeter
37 Choate Rosemary Hall
37 Hotchkiss School
31 Lawrenceville School
30 St. Paul's School
25 Hill School
25 St. George's School
23 St. Mark's School
19 Peddie School
19 Webb Schools
17 Episcopal High
17 Middlesex School
15 Blair Academy
15 Groton School
11 Cate School
9 St. Andrew's School
3 Thacher School
As Loomis just opened a new dorm and expanded the number of boarders, I expect that it has become an even more attractive boarding prospect. </p>
<p>From the list above, at first glance it looks promising that Andover, Deerfield & Exeter have ~40 slots for 10th grade boys and ~40 slots for 10th grade girls, but these schools are hard as hell to get into. So I need to take into account that schools have different levels of selectivity. Therefore, if I multiply the above list by the school's admit rate, then this is the "weighted" number of new 10th BOARDING boys or girls admitted, i.e. this is a ranking of schools as a good risk for 10th grade admission:</p>
<p>22 Kent School
20 Berkshire School
19 Northfield Mount Hermon
15 Loomis Chaffee
11 Taft School
9 Hill School
7 Lawrenceville School
7 Choate Rosemary Hall
7 Episcopal High
7 St. Mark's School
7 Hotchkiss School
7 St. George's School
7 Phillips Exeter
6 Phillips Academy
5 St. Paul's School
5 Deerfield Academy
5 Webb Schools
4 Blair Academy
4 Peddie School
4 Middlesex School
2 Cate School
2 St. Andrew's School
2 Groton School
0 Thacher School</p>
<p>If you want to run your own numbers for other schools or other grades, I've determined an empirical formula for average yield rate if you don’t have the exact yield figure:
0.06*(avgSSATpercentile ÷ admit rate) + 0.35 = Yield</p>
<p>So for Choate:
0.06 * (85% ÷ 19%) + 0.35 = 0.62 Yield</p>
<p>Obviously, picking "winners" is not just math. This was just a starting point to delineate which schools are an especially good or risky bet. For S1, we were new to the admissions process and had no clue what we were doing. For S2, the math helped to shape a strategic list of schools. But in the end he still to like the school and still had to get himself in. </p>
<p>GOOD LUCK</p>