Time test part II

Danielle's teacher emailed me and her reply wasn't so helpful. Her solution to my inquiry is this one summary page in her homework binder that shows hints on how to help our kids with math for the whole year. As far as time test 1 & 2, she said the concept is counting on. So for counting on we get a line liner explanation on that paper, not enough details so I know what I'm suppose to do at home. She also mentioned that the time test should not be a high pressure and I should not worry and assure her she will eventually pass. I guess she could take the same test 10 times, statistically, you will eventually.
My goal is to pin point the concept she's not learning so we're more efficient with time instead of going over the things she already know.
I emailed her back confirming what she was referring to as far as counting on.
Me: " You mean addition of X+1 or +2 or +3 where X can be any number from 0 to 21?"
Teach: " I don't have the binder in front of me so ask Danielle to bring her binder to me tomorrow and I'll go over it with her"
That was a surprising reply when I was expecting "counting on" is being taught in class at the moment and she would give me several ideas off the top of her head on how to review the same concepts at home.
That same night, I forgot to give Danielle instructions to bring the binder to her teacher so as expected, the teacher did not initiate to show Danielle the page she was referring to in her email.

Last night, I was preparing dinner in the kitchen and I asked Danielle

Me: "How was school today?"
D: "Good."
Me: "Did anything exciting happened in class?"
D: "Not really.."
Me: "Was there any tests going on?"
D: " YES, we had our math time test and I think I know what I did wrong. I made the mistake of 7+? =.... Hmm. I can't remember it now.."
I was all excited about her revelation which could be a false alarm
Me: "Did you pass?"
D: "I don't know, we didn't get our test back yet."
Me: "Ms. B didn't have time to grade them?"
D: "No. Parent volunteers grade them, not Ms. B"

That's one of the missing puzzle piece to solve my riddle. It explains the vague reply I got when I asked her for the specifics. She didn't grade the tests so she has no idea what concept my child is or isn't learning. We're going to have lots to talk about during our next parent teacher conference. It's not easy being a teacher so I'll help as much as I can.