Free 150 Score Correlation

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Silo004

Full Member
10+ Year Member
Have searched far and wide and am looking for this mythical score conversion table. T minus 3 days from the real deal. Got just over 85% and was wondering what that translated to in terms of scores and how predictive/reflective the free 150 was. FWIW, I did not think it was easy at all.

I got exactly what I got on Free 150 at the prometric center

I'm interested in this correlation too...anyone have a table or any experiences with it??

I got exactly what I got on Free 150 at the prometric center

How do you know -- don't you just get a percentage???

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How do you know -- don't you just get a percentage???

Yup. My 3 digit step score was very close to the % it is correlated with on a lot of different charts

Yup. My 3 digit step score was very close to the % it is correlated with on a lot of different charts

I think OP is looking for those charts that you are referencing.

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Was looking for a table/chart if anyone had any sort of score correlation they could provide? Or if someone on here has scored ~65-70% what that equates to? I'll just use those numbers to play with up and down the score correlations

I'm sorry. I assumed there was indeed a chart out there. I was going by the correlation our school gives us when we pass a mock step 1 (i.e a special NBME, caribbean version) where 80% - 230, 86% - 240,, 89% = 250, 96% = 265

Keep in mind though, these are not raw scores. No one really knows how they calculate anything in usmle tbh.

Your best bet is to expect a score +/- your latest NBME and/or between your NBME and free 150 (depending on your scores of course)

Thanks! I took the fred150 today and got a 65%. Not great (esp. compared to the higher scores), but does this put me in the range of 215-220?

Not to hijack, but how do we go about scheduling this exam through the prometric center? I tried doing that today using my scheduling permit number and was told it had already been used. Do we call the center?

Thanks! I took the fred150 today and got a 65%. Not great (esp. compared to the higher scores), but does this put me in the range of 215-220?

Suture15's numbers correlate pretty close to these graphs/charts:

Not sure where it came from exactly, but that would put 65% in the 187/190 range.

I would trust your NBME scores more for diagnostics

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Suture15's numbers correlate pretty close to these graphs/charts:

Not sure where it came from exactly, but that would put 65% in the 187/190 range.

I would trust your NBME scores more for diagnostics

Heyy thanks for the chart according to Suture15's correlation.

I just took NBME#16 this morning and I got an expected score of 228??...Idk if I was lucky or if that chart isn't accurate (according to suture15's correlations i mean).

Not sure what to think lol

Not to hijack, but how do we go about scheduling this exam through the prometric center? I tried doing that today using my scheduling permit number and was told it had already been used. Do we call the center?
You basically have to go through the same process as you did to sign up for the real thing. Get another permit, wait for the permit to come through, sign up. You don't have to do the "application" part again, where you mail the thing to wherever

You basically have to go through the same process as you did to sign up for the real thing. Get another permit, wait for the permit to come through, sign up. You don't have to do the "application" part again, where you mail the thing to wherever

Thanks. Didn't realize that.

Suture15's numbers correlate pretty close to these graphs/charts:

Not sure where it came from exactly, but that would put 65% in the 187/190 range.

I would trust your NBME scores more for diagnostics

So these "percent corrects" are specifically for the free 150? Or the real thing, or both?

They look like a percent correct for a specific NBME, not the free 150.

They're percent specific for nbme's..not 150 or the real thing

Idk how outdated it is or how current.

I'm assuming since nbme's have a harsher curve that the %correlation with score is a little bit more lenient on the real thing (graded on a bell curve).

I also don't think that 70% correct is equivalent to that of a 201.

No one knows how the % correct works for the actual NBME so not sure why people are worried over that. They adjust the scores according to the difficulty/other people's scores that day/taking out experimental questions. Just do your best LOL (as cliched as that may sound)

Heyy thanks for the chart according to Suture15's correlation.

I just took NBME#16 this morning and I got an expected score of 228??...Idk if I was lucky or if that chart isn't accurate (according to suture15's correlations i mean).

Not sure what to think lol

Why do you need the chart to calculate scores from NBMEs? The NBME triple digit score is already calculated for you. If the NBME showed you 228 that's what you got.

I know a lot of people take NBMEs offline and that chart may be used to score those test, but it still wouldn't be accurate since different practice NBMEs have different scales. I honestly know nothing about that chart, just came across it and it resembled percentages that had been posted.

Take it with a grain of salt but the percent % correct on that chart has corresponded to all three of the NBME's I took within 2 points and the percent I got correct on the free set(which I took 2 days before the exam) was in line with my last two NBMEs(that I took the week before). The chart seems to be not terrible.

Hi,

So this post is a little dated but I'm going to respond in case it helps anyone out. I scored 87% on the free 150 back in late May 2016 which equates to a 244 based on the above chart posted by another member.

I ended up getting a 240 on the real thing in June. I took the free 150 I think about 4-5 days before my actual step. Prior to that I had taken NBME 17 about a week earlier and scored a 232. So based on my experience the free 150 was pretty accurate.