Choosing the right OAT study materials is one of the most important decisions you will make as a pre-optometry student. The wrong resources waste months of your time. The right ones get you to test day confident and prepared.
This guide was written by Dr. Jim Romano, creator of the OAT Destroyer series, based on 35+ years of OAT preparation experience.
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What to Look for in OAT Study Materials
Not all OAT prep resources are equal. The best materials share three qualities:
- Problems that are as hard or harder than the actual OAT
- Detailed explanations — not just answer keys
- Coverage of all tested sections: Biology, General Chemistry, Organic Chemistry, Physics, Quantitative Reasoning, and Reading Comprehension
The OAT Destroyer — Best Overall OAT Prep Book
The OAT Destroyer is the most comprehensive OAT practice book available. It includes 2,472 OAT-style problems across all science sections, each with detailed solutions written by Dr. Romano.
"I used OAT Destroyer as my main study resource. The problems are challenging, but they really prepare you for the level of thinking required on the OAT." — TS 390
"TS 400 (99th percentile) | Academic Average 390 (99th percentile) — Thank you Dr. Romano and the OAT Destroyer." — July 2025
Students consistently report that after working through the OAT Destroyer, the actual OAT felt easier by comparison.
The Math Destroyer — Best for Quantitative Reasoning
Quantitative Reasoning is the section most science-focused students underestimate. The Math Destroyer is the most popular companion to the OAT Destroyer. Most students bundle them together and save $50.
General Chemistry Destroyer — Best for Gen Chem Depth
If General Chemistry is a weak area, the General Chemistry Destroyer provides deep conceptual review and hundreds of additional practice problems beyond what the OAT Destroyer covers.
Organic Chemistry Odyssey — Best for Orgo
Organic Chemistry is one of the most challenging OAT sections. The Organic Chemistry Odyssey covers every mechanism and reaction type tested on the OAT with Dr. Romano’s signature problem-based approach.
The Complete OAT Destroyer Bundle
For students who want everything in one place, the complete OAT Destroyer bundle includes all the books above at a significant discount. View the full bundle here: orgoman.com
About Dr. Jim Romano
Dr. Jim Romano has been preparing students for the DAT and OAT for more than 35 years. The OAT Destroyer was first published in 2006 and has been updated annually ever since. Every edition is personally authored by Dr. Romano based on current exam standards and direct student feedback.
Questions? Email Nancy directly at nancy.steen@gmail.com. We personally respond to every student.