OAA 8th grade math - how many practice tests before the actual assessment?

by priya_s 1,442 views9 replies
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priya_sOP
May 25, 2026

My daughter is taking the Ohio Achievement Assessment in math next month and I'm trying to figure out the right amount of prep without burning her out. She's been getting around 72-75% on the practice tests we've been doing at home, and from what I've read the proficiency cutoff for 8th grade math is around 80%. There's a real gap to close in about 4 weeks.

We've been doing about 30-45 minutes of practice on school nights, which she tolerates but definitely complains about by day 3 of the week. The number patterns and functions section is where she loses the most points. She's solid on basic algebra and geometry but the extended response questions where she has to show all work and explain her reasoning are costing her a lot of points.

My older son took the OAA three years ago and did fine, but I remember reading comprehension being his bigger concern at the time. Different kid, different subject, so I'm not sure how comparable the prep approach is. Anyone been through the 8th grade math specifically in the last year or two?

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sophie_m
May 25, 2026

We did about 8 full practice tests over 6 weeks before the assessment. I think 6 would have been enough honestly. By the 7th one my kid was fatigued and scores started to plateau rather than improve.

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marcus_t
May 25, 2026

Number patterns and functions is a common weak spot for 8th graders. Khan Academy has a solid unit on it that's less intimidating than most workbook materials if she's getting frustrated with the textbook approach.

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sophie_m
May 26, 2026

My son went through 8th grade math OAA last spring. He was scoring around 70% on practice tests in January and ended up at 83% on the actual assessment. The real exam felt slightly easier than some of the harder practice materials we found online.

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rashid_c
May 27, 2026

The extended response section is worth a lot of points and kids often rush it. Coach her to write out her reasoning even when she thinks the answer is obvious - partial credit adds up and graders look for that work.

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Mike_T
June 22, 2026

I actually failed my first attempt and had to retake it, so I'll tell you what I did differently. The big thing wasn't how many practice tests I did -- it was stopping to actually figure out why I missed each question instead of just moving on. I was rushing through practice tests thinking volume was the point. It wasn't.

At 72-75% she's closer than she probably realizes, but that gap usually comes from a few specific topics, not everything. I'd do maybe two more full practice tests and spend way more time on the questions she's consistently getting wrong. That's honestly what turned it around for me the second time. Quality over quantity, at least at this stage.

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CramSession
July 14, 2026

Been there. My son bombed his first attempt last year and I was convinced we just hadn't done enough practice tests, so I doubled down and had him grinding through 10 more before the retake. Turns out that wasn't the problem at all. What actually helped was going back through the ones he got wrong and figuring out exactly which concepts were tripping him up -- for him it was proportional reasoning and interpreting data in graphs, and once we focused on those specifically his scores jumped way more than all that extra testing ever did.

At 72-75% your daughter's honestly not far off. I'd say don't add more full tests right now, just dig into her wrong answers and see if there's a pattern. A few targeted sessions on weak spots did more for my son than a month of full practice runs. She's got the foundation, it's probably just one or two areas pulling her score down.

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FocusedStudent
August 4, 2026

I'm not a student but I went through the OAA as an adult learner studying part-time around a full-time job, so take this for what it's worth. At 72-75% she's closer than you think. I'd say three to four more timed practice tests spaced out over the next few weeks is plenty, more than that and she'll just start memorizing patterns instead of actually learning. I also found that reading practice helped me think through math word problems better, and doing something like oaa/questions/reading 2 alongside the math sets made a real difference for me.

The burnout thing is real. I'd do one practice test a week, review the wrong answers the next day, then leave it alone. Short focused sessions beat long grinding ones every time. If she's consistently hitting that range she's not far off, and going in rested matters more than cramming one last test the night before.

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PassedIt2025
August 21, 2026

I just passed my OAA last spring so I can tell you what worked for me. Honestly the number of practice tests matters less than what you do after each one. I'd finish a test, look at every wrong answer, and figure out exactly why I got it wrong before moving on. That was the thing that actually moved my score.

Your daughter's already close if she's hitting 72-75%, so she doesn't need a ton more tests, she needs targeted review. I also found that switching up subjects helped — I used oaa/questions/reading 2 even when studying math just to keep my brain fresh. Two or three more focused practice sessions and she should be fine.

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ExamSuccess_D
August 21, 2026

Honestly, 72-75% is a solid starting point. I was in a similar spot prepping for a different state assessment a few years back and I'd squeeze in 20-30 minutes during lunch or after the kids went to bed. It wasn't glamorous but it added up. I didn't do a ton of full-length practice tests because they're exhausting and she's a kid, so I'd focus more on the specific strands where she's losing points rather than just grinding whole tests over and over.

If she's consistently hitting that range, I'd say two or three more focused sessions on her weak spots and maybe one full practice run a week out is plenty. Burning out before the actual test is a real thing and it's not worth it. The OAA isn't designed to trick kids, it's more about whether they've got the core concepts solid, so quality practice beats volume every time.

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