How SAT June 2018 is scaled ?

My son got 55/58 correct in the Math part which was translated to 720 ?
This seems completely off for me . Any advice how to find the conversion/scaling table for June2 2018 exam ?

Anyone else with a similar experience that can help understanding this.
Thanks.

I got the same score, and I’ve been searching for answers as well. Apparently, it’s the “curve” because this test was super easy. I get that it might’ve been super easy to some people, but why so harsh of a curve?

I missed one math w/ Calculator question and got a 770. I missed 2 reading and 3 writing and dropped to a 720. I took the May SAT and missed 7 reading and 3 writing for a 730, and 2 math w/ calculator for a 790. I answered more correct questions but got lower scores in both cases. Did you have any unscorable questions? There were 2 in both reading and writing, which I believe caused the dramatic curve shift. If CollegeBoard made 4 mistakes in test questions, why are we being punished? This was the last SAT I could take with my fee waiver so I don’t know what to do. The questions should have been better vetted for issues before wasting everyone’s time and money on 4 bad questions.

See http://talk.qa.collegeconfidential.com/sat-preparation/2090388-harsh-curve-on-june-sat.html#latest