I am not in the US but we have laws too. That does not stop a teacher having inbuilt bias which they may not even be aware of. It also does not stop teachers making mistakes or making decisions based on preconceived ideas (you can't have an LD and be gifted, if you get skipped you might get pregnant because that is what happened too the last person, it is unfair to make a ESL student do a hard class or whatever).
Anyway it may be irrelevant - I have never met the OP and she did state she was having trouble typing on her phone. I make a lot more errors on my phone too. And it is possible they just put students in order by grade and drew a line under number 60. The OP may have been 61.