Daughter's Reading Score is Oddly Low - 69, applying for 4th grade

[Eric Fall Dad]

My daughter's scores bounce around a little, 99-98, but 69?

She came out of the test convinced she scored everything perfectly correct, and she does enough testing, we do the test every year along with the standardized tests at school, she seems pretty accurate in her assessment of how well she did, and scores consistently in the high 90's.

Her scores this year,
Mathematics: 98 -- she normally scores 99, but I'll buy it, maybe she misunderstood a question or two or made a clerical mistake, it happens
Reading: 69 -- has often scored 99 on standardized tests for reading, I don't think she had a bad testing day at all, she was very alert coming into and out of the test and very confident after taking it, she was absolutely sure she got every question correct. She says she didn't guess on any of them. So maybe she got tripped up on the question number and the bubbles or something? I guess that happens too. :-/

Just curious if other people had any similar experience with the test this year for their child.

Eric