J18 scale will be lower than J17 scale Forum
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J18 scale will be lower than J17 scale
Sorry to be the bearer of bad news, but the J18 scale will be worse than the J17 scale. For example, a J17 examinee with an MBE of 137.5 was 38.2 %tile while a J18 examinee with an MBE of 137.8 was 44.2 %tile. A higher %tile for a similar score means that the scale is lower for that exam. For example, in F17 an MBE of 136.7 was 56.3 %tile while in F18 an MBE of 136.7 was 59.5 %tile and the MBE mean in F17 was 134.1 versus 132.775 in F18. As to how significant the difference, I don't know yet. However, I can guesstimate it and also tell you the J18 MBE mean if more examinees send me their score info, especially examinees with MBE scores between 138-145:
https://seperac.com/subscoreform.php
https://seperac.com/subscoreform.php
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Re: J18 scale will be lower than J17 scale
I have sensed that too, Joe! While a 160 in J17 was 87th percentile, a 160 in July18 is 88th percentile. A 165 in J17 was 93rd percentile whereas a 165 in July18 is 93.9.JoeSeperac wrote:Sorry to be the bearer of bad news, but the J18 scale will be worse than the J17 scale. For example, a J17 examinee with an MBE of 137.5 was 38.2 %tile while a J18 examinee with an MBE of 137.8 was 44.2 %tile. A higher %tile for a similar score means that the scale is lower for that exam. For example, in F17 an MBE of 136.7 was 56.3 %tile while in F18 an MBE of 136.7 was 59.5 %tile and the MBE mean in F17 was 134.1 versus 132.775 in F18. As to how significant the difference, I don't know yet. However, I can guesstimate it and also tell you the J18 MBE mean if more examinees send me their score info, especially examinees with MBE scores between 138-145:
https://seperac.com/subscoreform.php
I think there will be around 1 scaled point drop from last July...
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Re: J18 scale will be lower than J17 scale
Just checked the NCBE's website. They have reported a 2.2 drop in the MBE mean score for July18. Not particularly great news then.JoeSeperac wrote:Sorry to be the bearer of bad news, but the J18 scale will be worse than the J17 scale. For example, a J17 examinee with an MBE of 137.5 was 38.2 %tile while a J18 examinee with an MBE of 137.8 was 44.2 %tile. A higher %tile for a similar score means that the scale is lower for that exam. For example, in F17 an MBE of 136.7 was 56.3 %tile while in F18 an MBE of 136.7 was 59.5 %tile and the MBE mean in F17 was 134.1 versus 132.775 in F18. As to how significant the difference, I don't know yet. However, I can guesstimate it and also tell you the J18 MBE mean if more examinees send me their score info, especially examinees with MBE scores between 138-145:
https://seperac.com/subscoreform.php
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Re: J18 scale will be lower than J17 scale
139.5. Brutal for July.
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Re: J18 scale will be lower than J17 scale
http://www.ncbex.org/news/july-2018-ave ... -decrease/TheJuryMustDie wrote:Just checked the NCBE's website. They have reported a 2.2 drop in the MBE mean score for July18. Not particularly great news then.JoeSeperac wrote:Sorry to be the bearer of bad news, but the J18 scale will be worse than the J17 scale. For example, a J17 examinee with an MBE of 137.5 was 38.2 %tile while a J18 examinee with an MBE of 137.8 was 44.2 %tile. A higher %tile for a similar score means that the scale is lower for that exam. For example, in F17 an MBE of 136.7 was 56.3 %tile while in F18 an MBE of 136.7 was 59.5 %tile and the MBE mean in F17 was 134.1 versus 132.775 in F18. As to how significant the difference, I don't know yet. However, I can guesstimate it and also tell you the J18 MBE mean if more examinees send me their score info, especially examinees with MBE scores between 138-145:
https://seperac.com/subscoreform.php
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Re: J18 scale will be lower than J17 scale
Whelp waiting for a really low pass rate for CA, I guess.
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Re: J18 scale will be lower than J17 scale
Is there anything good that can come out of a lower mean?
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Re: J18 scale will be lower than J17 scale
Below is a chart comparing CA July Pass rates to the July national MBE mean from 1996-2016.TheJuryMustDie wrote:Just checked the NCBE's website. They have reported a 2.2 drop in the MBE mean score for July18. Not particularly great news then.JoeSeperac wrote:Sorry to be the bearer of bad news, but the J18 scale will be worse than the J17 scale. For example, a J17 examinee with an MBE of 137.5 was 38.2 %tile while a J18 examinee with an MBE of 137.8 was 44.2 %tile. A higher %tile for a similar score means that the scale is lower for that exam. For example, in F17 an MBE of 136.7 was 56.3 %tile while in F18 an MBE of 136.7 was 59.5 %tile and the MBE mean in F17 was 134.1 versus 132.775 in F18. As to how significant the difference, I don't know yet. However, I can guesstimate it and also tell you the J18 MBE mean if more examinees send me their score info, especially examinees with MBE scores between 138-145:
https://seperac.com/subscoreform.php
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Re: J18 scale will be lower than J17 scale
Wow so this isn't just low, this is one of the lowest ever. Interesting that the correlation between CA and mbe mean decoupled in 2017 after they moved to the 2 day exam.
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Re: J18 scale will be lower than J17 scale
It does look like this July's MBE mean is the lowest in about 30 years.dabigchina wrote:Wow so this isn't just low, this is one of the lowest ever. Interesting that the correlation between CA and mbe mean decoupled in 2017 after they moved to the 2 day exam.
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Re: J18 scale will be lower than J17 scale
Makes me think they fucked up the psychometrics. The drop is way too big.TheJuryMustDie wrote:It does look like this July's MBE mean is the lowest in about 30 years.dabigchina wrote:Wow so this isn't just low, this is one of the lowest ever. Interesting that the correlation between CA and mbe mean decoupled in 2017 after they moved to the 2 day exam.
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Re: J18 scale will be lower than J17 scale
As Joe Seperac reckon, that won't be surprising. Probably why they make little known of their procedures.dabigchina wrote:Makes me think they fucked up the psychometrics. The drop is way too big.TheJuryMustDie wrote:It does look like this July's MBE mean is the lowest in about 30 years.dabigchina wrote:Wow so this isn't just low, this is one of the lowest ever. Interesting that the correlation between CA and mbe mean decoupled in 2017 after they moved to the 2 day exam.
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Re: J18 scale will be lower than J17 scale
The J18 MBE did seem odd compared to all the released question on AdaptiBar.
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Re: J18 scale will be lower than J17 scale
The July 2018 MBE mean of 139.5 is the 3rd lowest July mean since the MBE was introduced in 1972. The lowest was July 1972 (137.9) and then July 1984 (139.2).TheJuryMustDie wrote:It does look like this July's MBE mean is the lowest in about 30 years.
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Re: J18 scale will be lower than J17 scale
JoeSeperac wrote:The July 2018 MBE mean of 139.5 is the 3rd lowest July mean since the MBE was introduced in 1972. The lowest was July 1972 (137.9) and then July 1984 (139.2).TheJuryMustDie wrote:It does look like this July's MBE mean is the lowest in about 30 years.
And yet this is still passing in virtually every state, no? I mean we are talking about differentials worth a fraction of a point.
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Re: J18 scale will be lower than J17 scale
Joe, out of interest, do you have an idea what the average July mean in New York? I understand the essays are scaled to the jurisdiction's MBE mean.JoeSeperac wrote:The July 2018 MBE mean of 139.5 is the 3rd lowest July mean since the MBE was introduced in 1972. The lowest was July 1972 (137.9) and then July 1984 (139.2).TheJuryMustDie wrote:It does look like this July's MBE mean is the lowest in about 30 years.
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Re: J18 scale will be lower than J17 scale
No. There was a drop of 2.2 points from July17 to July18. That's significant especially if you are on the cusp.Molj1987 wrote:JoeSeperac wrote:The July 2018 MBE mean of 139.5 is the 3rd lowest July mean since the MBE was introduced in 1972. The lowest was July 1972 (137.9) and then July 1984 (139.2).TheJuryMustDie wrote:It does look like this July's MBE mean is the lowest in about 30 years.
And yet this is still passing in virtually every state, no? I mean we are talking about differentials worth a fraction of a point.
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Re: J18 scale will be lower than J17 scale
This is 100% correct. If you are on the cusp for J18, you are more likely to end up on the failing end as compared to J17. As to why the MBE mean is so important to pass rates, following are national July pass rates from 2016 to 1996 compared to the July MBE mean:TheJuryMustDie wrote:No. There was a drop of 2.2 points from July17 to July18. That's significant especially if you are on the cusp.Molj1987 wrote:JoeSeperac wrote:The July 2018 MBE mean of 139.5 is the 3rd lowest July mean since the MBE was introduced in 1972. The lowest was July 1972 (137.9) and then July 1984 (139.2).TheJuryMustDie wrote:It does look like this July's MBE mean is the lowest in about 30 years.
And yet this is still passing in virtually every state, no? I mean we are talking about differentials worth a fraction of a point.
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Re: J18 scale will be lower than J17 scale
True, but that could be an anomaly; July 2015 was only 0.4 higher. July 2016 was only 0.8 higher. The point is that the average score is still passing.TheJuryMustDie wrote:No. There was a drop of 2.2 points from July17 to July18. That's significant especially if you are on the cusp.Molj1987 wrote:JoeSeperac wrote:The July 2018 MBE mean of 139.5 is the 3rd lowest July mean since the MBE was introduced in 1972. The lowest was July 1972 (137.9) and then July 1984 (139.2).TheJuryMustDie wrote:It does look like this July's MBE mean is the lowest in about 30 years.
And yet this is still passing in virtually every state, no? I mean we are talking about differentials worth a fraction of a point.
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Re: J18 scale will be lower than J17 scale
Not any more. I could figure it out for the pre-UBE exam, but not with the current exam. From my data, the July NY mean is an average of 2.2 points lower than the July national mean. For example, in J13, the national MBE mean was 144.3 while the NY MBE mean was 142.25.TheJuryMustDie wrote:Joe, out of interest, do you have an idea what the average July mean in New York? I understand the essays are scaled to the jurisdiction's MBE mean.JoeSeperac wrote:The July 2018 MBE mean of 139.5 is the 3rd lowest July mean since the MBE was introduced in 1972. The lowest was July 1972 (137.9) and then July 1984 (139.2).TheJuryMustDie wrote:It does look like this July's MBE mean is the lowest in about 30 years.
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Re: J18 scale will be lower than J17 scale
Graph is helpful but the correlation actually seems to fade when looking at data from recent years.JoeSeperac wrote:This is 100% correct. If you are on the cusp for J18, you are more likely to end up on the failing end as compared to J17. As to why the MBE mean is so important to pass rates, following are national July pass rates from 2016 to 1996 compared to the July MBE mean:TheJuryMustDie wrote:No. There was a drop of 2.2 points from July17 to July18. That's significant especially if you are on the cusp.Molj1987 wrote:JoeSeperac wrote:The July 2018 MBE mean of 139.5 is the 3rd lowest July mean since the MBE was introduced in 1972. The lowest was July 1972 (137.9) and then July 1984 (139.2).TheJuryMustDie wrote:It does look like this July's MBE mean is the lowest in about 30 years.
And yet this is still passing in virtually every state, no? I mean we are talking about differentials worth a fraction of a point.
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Re: J18 scale will be lower than J17 scale
So it could be theoretically be 137.2 for July18 then. Would you say the essays mean will also be 137.2 for July18? The written portion is my Achilles Heels.JoeSeperac wrote:Not any more. I could figure it out for the pre-UBE exam, but not with the current exam. From my data, the July NY mean is an average of 2.2 points lower than the July national mean. For example, in J13, the national MBE mean was 144.3 while the NY MBE mean was 142.25.TheJuryMustDie wrote:Joe, out of interest, do you have an idea what the average July mean in New York? I understand the essays are scaled to the jurisdiction's MBE mean.JoeSeperac wrote:The July 2018 MBE mean of 139.5 is the 3rd lowest July mean since the MBE was introduced in 1972. The lowest was July 1972 (137.9) and then July 1984 (139.2).TheJuryMustDie wrote:It does look like this July's MBE mean is the lowest in about 30 years.
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Re: J18 scale will be lower than J17 scale
It's substantial, but I would guess that NCBE would triple check an abnormally low MBE such as J18s. Unfortunately, corresponding LSATs have been dropping for years, which implies lower MBE when that class goes to take the bar. From the LSAT data, it will actually get worse.dabigchina wrote:Makes me think they fucked up the psychometrics. The drop is way too big.TheJuryMustDie wrote:It does look like this July's MBE mean is the lowest in about 30 years.dabigchina wrote:Wow so this isn't just low, this is one of the lowest ever. Interesting that the correlation between CA and mbe mean decoupled in 2017 after they moved to the 2 day exam.
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Re: J18 scale will be lower than J17 scale
So is it for sure that this would negatively impact scaling? For instance, the mean score might be lower, but the decrease in scores may not be caused by "leveller" questions they use to establish the difficulty of the exam?
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Re: J18 scale will be lower than J17 scale
I don't think they fucked up with the numbers. I think they finally achieved the psychometric's goal. And I am not talking about the main goal - uniformity between administrations. This psychometric method will inevitably lead to lower and lower pass rates until a good number of people will give up sitting for the exam entirely, won't it?JoeSeperac wrote:It's substantial, but I would guess that NCBE would triple check an abnormally low MBE such as J18s. Unfortunately, corresponding LSATs have been dropping for years, which implies lower MBE when that class goes to take the bar. From the LSAT data, it will actually get worse.dabigchina wrote:Makes me think they fucked up the psychometrics. The drop is way too big.TheJuryMustDie wrote:It does look like this July's MBE mean is the lowest in about 30 years.dabigchina wrote:Wow so this isn't just low, this is one of the lowest ever. Interesting that the correlation between CA and mbe mean decoupled in 2017 after they moved to the 2 day exam.
Think about it. The lower the scores, the lower the scales, the higher the number of applicants who will fail. Which in turn will decrease the scores, which will decrease the scale even more. And this cycle will go on until either (1) a big number of repeaters will stop sitting for the bar exam allowing "better" applicants to reverse this trend, or (2) the pass rates will get so low that so many law schools will lose accreditation, leading to a temporary political solution (eg: lowering the cut score).
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