## Class Rank Estimator

(Study Tips, Dealing With Stress, Maintaining a Social Life, Financial Aid, Internships, Bar Exam, Careers in Law . . . )
thesealocust

Posts: 8525
Joined: Mon Oct 20, 2008 8:50 pm

### Re: Class Rank Estimator

OK, if you're going to do fancy, we can make this better. It's been way too long since I've done programming or web development, but if I lay out the algebra, could you program the tool to accept any two data points (i.e. "top 10% = 3.___ and top 15% = 3.____") instead of requiring one data point and the mean? Over the years I've cranked a lot of requests that didn't have the mean.

In order to do it we'd need a function that returned the Z-score for a given percentile, but I believe that has to already be baked in somewhere even if you are given the median?

LSATSCORES2012

Posts: 770
Joined: Mon Jul 02, 2012 2:12 pm

### Re: Class Rank Estimator

thesealocust wrote:OK, if you're going to do fancy, we can make this better. It's been way too long since I've done programming or web development, but if I lay out the algebra, could you program the tool to accept any two data points (i.e. "top 10% = 3.___ and top 15% = 3.____") instead of requiring one data point and the mean? Over the years I've cranked a lot of requests that didn't have the mean.

In order to do it we'd need a function that returned the Z-score for a given percentile, but I believe that has to already be baked in somewhere even if you are given the median?
if you give me the equations I should be able to make it work... I don't really understand what's going on with the statistics, I just looked up the equations for the excel functions and put them into code, and it returns the same output as the spreadsheet. unfortunately that level of knowledge doesn't allow me to do much but take what you give me and put it into code.

Geaux12

Posts: 415
Joined: Tue Oct 25, 2011 11:56 am

### Re: Class Rank Estimator

This may sound stupid, but how the hell am I supposed to enter a "known" GPA and percentile if nobody has their grades back?

atcushman

Posts: 383
Joined: Tue Oct 25, 2011 5:08 pm

### Re: Class Rank Estimator

Geaux12 wrote:This may sound stupid, but how the hell am I supposed to enter a "known" GPA and percentile if nobody has their grades back?
you can try and find last years rankings they should be close

dailygrind

Posts: 19906
Joined: Wed Oct 22, 2008 11:08 am

### Re: Class Rank Estimator

thesealocust wrote:OK, if you're going to do fancy, we can make this better. It's been way too long since I've done programming or web development, but if I lay out the algebra, could you program the tool to accept any two data points (i.e. "top 10% = 3.___ and top 15% = 3.____") instead of requiring one data point and the mean? Over the years I've cranked a lot of requests that didn't have the mean.

In order to do it we'd need a function that returned the Z-score for a given percentile, but I believe that has to already be baked in somewhere even if you are given the median?
Yeah. The formula for Z score for a given percentile is:

=NORMSINV(1-(A1/100))

where A1 = top whatever percentile, e.g. a 3.7 at UVA would enter 6.8.

The other formula I'm using to drive the estimator is called "NORM.DIST" and it requires the mean for estimation. There might be an Excel formula to calculate the mean given a ranked data point or two, but I need a bit of time to think on it.

## Register now to search topics and post comments!

Absolutely FREE!

thesealocust

Posts: 8525
Joined: Mon Oct 20, 2008 8:50 pm

### Re: Class Rank Estimator

Aww yis. I'm busy now but will algebra this to pieces the next time I have a moment.

maudio129

Posts: 15
Joined: Sat Mar 24, 2012 5:08 pm

### Re: Class Rank Estimator

...
Last edited by maudio129 on Sun Aug 04, 2013 9:57 pm, edited 1 time in total.

LSATSCORES2012

Posts: 770
Joined: Mon Jul 02, 2012 2:12 pm

### Re: Class Rank Estimator

maudio129 wrote:Hey everybody, I was wondering if someone could help me estimate my GPA.

The quartiles are:

25%: 3.619
33%: 3.524
50%: 3.309
75%: 2.953

My GPA is 3.786

About top 15%. Nice work with the GPA!

3|ink

Posts: 7393
Joined: Wed Dec 16, 2009 5:23 pm

### Re: Class Rank Estimator

Anyone have any recent GULC data points?

## Register for access!

Did I mention it was FREE ?

Viper12

Posts: 20
Joined: Mon Apr 15, 2013 10:05 am

### Re: Class Rank Estimator

No data points....Curve is 3.0 and my GPA is 3.2....Any idea how to calculate/get a rough estimate?

Emma.

Posts: 2408
Joined: Sun Oct 05, 2008 7:57 pm

### Re: Class Rank Estimator

Trying to figure out my graduation ranking.

179 = top 22.8%
180.5 = top 7.9%

My GPA = 181.25

Thanks for the help.

LSATSCORES2012

Posts: 770
Joined: Mon Jul 02, 2012 2:12 pm

### Re: Class Rank Estimator

Emma. wrote:Trying to figure out my graduation ranking.

179 = top 22.8%
180.5 = top 7.9%

My GPA = 181.25

Thanks for the help.
So, this is totally winging it, but I plugged in 179/22.8% and then kept inputting means to find the percentile for a GPA of 180.5 until it came out to about 8%. This happened with a mean GPA of 177.3, so I'm assuming that's somewhere around Chicago's mean.

If you plug in your GPA with the 177.3 as the mean, that puts you at about top 4%.

ETA: I also added this estimating ability to the calculator on my website... no guarantees of accuracy, though. The only school I know of with a unique GPA range is UChicago, so I added a checkbox that you need to click if you're estimating a UChicago GPA. (If you go to a school that has a weird GPA besides UChicago and you need to use that feature because you don't know the median GPA, let me know and I'll add you in.)

ColtsFan88

Posts: 1431
Joined: Thu Oct 13, 2011 5:05 pm

### Re: Class Rank Estimator

3|ink wrote:Anyone have any recent GULC data points?
I can give you top 33, 15, 10%

But they don't release the mean, for whatever stupid reason.

If anyone can figure this out without the mean, I would be appreciative:

Top 33: 3.43
Top 15: 3.62
Top 10: 3.70
My GPA: 3.39

Register now!

## Resources to assist law school applicants, students & graduates.

It's still FREE!

LSATSCORES2012

Posts: 770
Joined: Mon Jul 02, 2012 2:12 pm

### Re: Class Rank Estimator

ColtsFan88 wrote:
3|ink wrote:Anyone have any recent GULC data points?
I can give you top 33, 15, 10%

But they don't release the mean, for whatever stupid reason.

If anyone can figure this out without the mean, I would be appreciative:

Top 33: 3.43
Top 15: 3.62
Top 10: 3.70
My GPA: 3.39

Emma.

Posts: 2408
Joined: Sun Oct 05, 2008 7:57 pm

### Re: Class Rank Estimator

LSATSCORES2012 wrote:
Emma. wrote:Trying to figure out my graduation ranking.

179 = top 22.8%
180.5 = top 7.9%

My GPA = 181.25

Thanks for the help.
So, this is totally winging it, but I plugged in 179/22.8% and then kept inputting means to find the percentile for a GPA of 180.5 until it came out to about 8%. This happened with a mean GPA of 177.3, so I'm assuming that's somewhere around Chicago's mean.

If you plug in your GPA with the 177.3 as the mean, that puts you at about top 4%.

ETA: I also added this estimating ability to the calculator on my website... no guarantees of accuracy, though. The only school I know of with a unique GPA range is UChicago, so I added a checkbox that you need to click if you're estimating a UChicago GPA. (If you go to a school that has a weird GPA besides UChicago and you need to use that feature because you don't know the median GPA, let me know and I'll add you in.)

WheninLaw

Posts: 620
Joined: Fri Feb 24, 2012 3:35 pm

### Re: Class Rank Estimator

Class rank indicator doesn't seem to be working. Says page temporarily moved but doesn't redirect anywhere.

LSATSCORES2012

Posts: 770
Joined: Mon Jul 02, 2012 2:12 pm

### Re: Class Rank Estimator

WheninLaw wrote:Class rank indicator doesn't seem to be working. Says page temporarily moved but doesn't redirect anywhere.
Is it still not working? I was switching servers right around the time of your post and that may have contributed to it. If it's not working I would recommend clearing your cache/trying a different browser. (Sorry for the trouble! The old server was being pesky and I wanted to investigate without risking the stability of my sites...)

## Register now!

I'm pretty sure I told you it's FREE...

superpippo

Posts: 93
Joined: Fri Nov 16, 2012 5:25 am

### Re: Class Rank Estimator

Would love some help trying to figure out this model.

top 15% 3.590
top 20% 3.548
top 25% 3.483
top 30% 3.421
top 35% 3.379

romanticegotist

Posts: 1773
Joined: Thu Jan 10, 2013 4:15 pm

### Re: Class Rank Estimator

atcushman wrote:
Geaux12 wrote:This may sound stupid, but how the hell am I supposed to enter a "known" GPA and percentile if nobody has their grades back?
you can try and find last years rankings they should be close
Any advice from anyone on how to do this?

thesealocust

Posts: 8525
Joined: Mon Oct 20, 2008 8:50 pm

### Re: Class Rank Estimator

"known percentile" means a lot of school publish things like "top X% of the class [historically] requires Y GPA" - coupled with information like "median GPA is Z" you can calculate fairly accurate class ranks assuming a normal distribution.

How you actually get that data is entirely school dependant and TLS can't really help. It will be in materials you received, on private school web interfaces, emailed to the class, posted in the library, whatever.

Leprechaun

Posts: 146
Joined: Sun Jan 01, 2012 1:00 pm

### Re: Class Rank Estimator

Top 10%: 3.61
Top 25%: 3.36
Top 33%: 3.28
Top 50%: 3.07
Top 75%: 2.79

My GPA 3.88

Communicate now with those who not only know what a legal education is, but can offer you worthy advice and commentary as you complete the three most educational, yet challenging years of your law related post graduate life.

## Register now, it's still FREE!

LSATSCORES2012

Posts: 770
Joined: Mon Jul 02, 2012 2:12 pm

### Re: Class Rank Estimator

redid the estimator a little bit, should now estimate medians more accurately and is a bit easier to understand, also added dailygrind to the credits page for doing the equation stuff
Leprechaun wrote:Can someone run mine please?

Top 10%: 3.61&nbsp;
Top 25%: 3.36&nbsp;
Top 33%: 3.28&nbsp;
Top 50%: 3.07&nbsp;
Top 75%: 2.79&nbsp;

My GPA 3.88

Leprechaun

Posts: 146
Joined: Sun Jan 01, 2012 1:00 pm

### Re: Class Rank Estimator

Thanks for the help.

fallingup

Posts: 481
Joined: Sat Jul 17, 2010 4:34 pm

### Re: Class Rank Estimator

Is there a way to find out what the median GPA is at your school if your school doesn't release rankings? I know that for individual 1L classes, the median is set to 3.3, and for upper-level courses, 3.5. But I am curious to know the median cumulative GPA.

Wearthewildthingsr

Posts: 78
Joined: Tue Jul 02, 2013 7:18 pm

### Re: Class Rank Estimator

this is probably a dumb question and answered previously (didn't go through 4 pgs) but how do we know what the rank of a set gpa is when the law school goes off a range from 0-5% for a 4.3? I would think it highly unlikely for the school's distribution to be such that 5% of ppl got 4.3's

## Seriously? What are you waiting for?

Now there's a charge.
Just kidding ... it's still FREE!