# Algebra 2 / Trigonometry Conversion Chart

[UPDATE – The Conversion Chart arrived before 7:30. 46 passes. 65 mastery]

This is the first time the exam was given, so instead of setting up a key, the State’s contractor collected all the answer sheets, weighed the scores, and had a committee recommend what the passing score will be, and what the Mastery (85) score will be. Recall, there are 88 points on the test. Once those were set up, a cubic function was fit to the data points, and a conversion chart was created.

(Here’s a longer, more complete version)

The conversion chart will be released later this morning. It will be on this page.

(I’ll update this post when the actual chart becomes available) Done!

### Challenge/Contest

In the meantime, how close can you come, guessing what the passing and mastery scores will be?

This year for Algebra: 30; 68; 87

for Geometry: 41; 71; 86

for Math B: 46; 70; 88

for Living Environment: 41; 66; 85

for Chemistry: 50; 75; 85

for Physics: 47; 69; 85

Here’s a discussion on the New York State Math Teachers (AMTNYS) listserve. And a continuation.

I’ll kick things off. Passing 49. Mastery 71. Out of 88.

Put your guesses in the comments.

My guess is that the low score for each subject is the passing and the middle score for each subject is the Mastery. Historically, the average City exam score in my district is ~45% for Algebra 1.

So what do you predict for passing? for mastery?

All those other subjects have conversation charts already…

http://www.jmap.org/

Right of jmap.

How do you make a good grade conversion chart? For the city final this year, I scaled everyone’s scores up linearly, but I know that’s not the way it should be done. And I’m a math teacher! Yikers.

The State uses the 0, the pass, the mastery, and the 100 scores, and fits a cubic to those four points.

They must first have to decide what score is considered a passing score and what score is considered mastery. How do they decide these scores? How does one “fit a cubic to 4 points?”

yay i got a 97 on trig :) wooot