Science Teas Test Study Guide

What the TEAS Science Section Actually Tests

The TEAS science section covers biology, chemistry, physics, and reading/science comprehension. You get about 35-40 science questions out of 170 total, with roughly 50 minutes allocated depending on the version you're taking. Most people blow through this section because they think they remember high school science. That assumption costs them points. The questions aren't testing whether you can recite the periodic table. They're testing whether you can read a short passage about an experiment and draw the right conclusion from data that's presented in tables or graphs. I've watched dozens of students fail to clear the science benchmark on their first attempt. The most common reason isn't a lack of content knowledge. It's that they don't know how to approach the reading-based science questions under time pressure. These questions look like reading comprehension, but they're wrapped in scientific language. The actual skill being tested is data interpretation, not memorization.

Science Teas Test Study Guide

Here's how I structured my own preparation. I started with a diagnostic practice test, just to see where I actually stood. The score told me more than any advice column ever could. I got maybe 60% on the science portion, and when I broke it down, my weak spots were clear: physiology and chemistry stoichiometry. Everything else was decent. For biology, I focused on human body systems. Not every system equally, but cardio, respiratory, and renal most of the questions. I spent about two weeks going through a content review book, then shifted to practice questions. The key shift was doing questions before I felt "ready." Most people wait until they've read everything. That delays practice, and practice is where you actually learn the question patterns. For chemistry, I reviewed basic concepts: atomic structure, bonding types, balancing equations, pH scale, and molarity calculations. That's roughly the ceiling of what shows up. You won't see organic chemistry mechanisms or advanced thermochemistry. If you're strong in those areas already, you can skip them entirely.

The physics content is minimal. Basic force, motion, energy, and waves. A few questions touch on electricity. You don't need to derive anything. You need to recognize what formula applies to a word problem and plug in the numbers. I used free resources from Khan Academy for this section, about six hours total spread across three days. Reading and science integration questions are the tricky part. You'll get a passage about some study or experiment, then questions about the hypothesis, variables, conclusions, or flaws in the methodology. This is essentially critical reasoning dressed up in science clothes. I learned to identify the independent variable, dependent variable, and controlled variables in every passage. Once I started doing that automatically, my accuracy on those questions jumped from roughly 50% to about 80%.

Where People Go Wrong

The biggest mistake I see is studying content passively. Reading a textbook chapter and highlighting it feels like work, but it produces almost no retention. You need active recall. Close the book and write down everything you remember. Then check what you missed. That process is slower and more annoying, which is exactly why it works. Another common trap is ignoring the timing. The TEAS doesn't give you a timer per question, but the total section time is fixed. If you spend three minutes on a difficult chemistry calculation, you've stolen time from three or four easier questions you could have gotten right. I started doing full timed sections, not just untimed practice. The pressure changes how you think about each question. Under timed conditions, you learn to flag something and move on instead of wrestling with it. There's also a specific edge case I ran into that most guides don't mention. The ATI provides official practice tests, and the actual TEAS uses questions very similar to those, but not identical. When I took my second official practice test, I noticed a pattern: ATI tends to repeat question formats more than specific content. A question about enzyme function on one test might show up as a question about protein synthesis on another. The underlying concept is the same. I started grouping questions by concept rather than by topic heading, which made my review much more efficient.

How to Build Your Study Plan

If you have four to six weeks, here's a realistic schedule. Week one is diagnostics and content review for biology. Weeks two and three cover chemistry and physics fundamentals with practice questions interleaved. Week four is intensive practice tests, timed, under real conditions. Week five is targeted review of whatever the practice tests reveal as weak spots. Week six is light review and rest. If you have two to three weeks, compress the timeline. Skip the detailed content review and go straight to practice questions with targeted review of mistakes. You won't cover everything, but you'll cover what actually matters for the test format. I'd estimate this approach saves about ten hours compared to a full content review cycle, with minimal impact on score if your baseline is already above 60%.

Resources That Actually Help

The official ATI practice tests are the closest thing to the real exam. I took two of them under timed conditions before my test date. The third-party practice tests from sources like Mometrix or Kaplan are okay for extra volume, but their questions tend to be either harder or oddly worded compared to the actual exam. Use them for quantity, not as a proxy for the real thing. For free content review, Khan Academy covers the chemistry and physics basics adequately. For biology, the YouTube channel "The Organic Chemistry Tutor" has solid videos on body systems and physiology that align well with TEAS content. I spent maybe eight hours total across these free resources and it covered what I needed. There's a limitation I should mention upfront. The TEAS science section doesn't allow a calculator for the math-heavy chemistry questions. If you're slow at mental arithmetic or basic algebra, that becomes a real bottleneck. I found that practicing calculations without a calculator for two weeks cut my computation time roughly in half. It's boring and tedious, but it directly improves your score on those questions.

Another hard truth: the TEAS science section has a benchmark score set by individual nursing programs, not by ATI. Some schools require a 62%, others require an 80%. Knowing your target score before you start studying changes how aggressively you prepare. If you need an 80%, you can't skip the physiology depth. If you need a 62%, a lighter study approach might be sufficient. Check your program's requirement first, then tailor your effort accordingly. The scoring also combines your raw score with a standardized scale, so your percentage on practice tests won't map exactly to your expected TEAS score. A 70% on a practice test doesn't guarantee a 70% on the real exam. The relationship is roughly consistent, but don't treat it as exact. Use practice scores as direction, not prediction. I'd recommend taking at least three full practice tests before your actual exam date. The first two establish your baseline and reveal gaps. The third, taken as close to your test date as possible, gives you the best prediction of your actual performance. If the third score is within five points of your target benchmark, you're probably ready. If it's further away, you need more time or a different strategy.