Want to test yourself against the most difficult SAT math questions? Want to know what makes these questions so difficult and how best to solve them? If you're ready to really sink your teeth into the SAT math section and have your sights set on that perfect score, then this is the guide for you.

We've put together what we believe to be the 15 most difficult questions for the current Digital SAT, with strategies and answer explanations for each. These are all hard SAT Math questions from College Board SAT practice tests, which means understanding them is one of the best ways to study for those of you aiming for perfection.

Online classes can provide a convenient and cost-efficient alternative to traditional, face-to-face classes for people who want to further their education. But how do online classes work, exactly?

Most people are aware that online classes are probably different from in-person courses, but many aren't sure what the process of taking an online course is like. To help you develop a working knowledge of how online classes work and what to expect from online courses before you decide to enroll, we're going to cover the following:

• Explain what online classes are and where you can take them
• Answer the question, "How do online college classes work?" by explaining how to enroll and attend online classes
• Discuss what a typical class session is like in an online class as well as go over how online assignments work
• Provide a 5 question quiz to help you determine if online classes are a good fit for you
• Give you 5 tips for succeeding in online classes

So, how do online classes work, and how do you do online classes? Let's find out!

When I applied to college, I was accepted into every school I applied to, including Harvard, Princeton, Stanford, MIT, the Ivy League, UC Berkeley, UCLA, and more. While I had a strong overall application, the two teacher letters of recommendation were critical in getting me admitted.

Why? Both teachers said I was one of the top students they had ever taught. Both enthusiastically advocated for my personality, leadership skills, and energy.

How can you earn recommendation letters that will get you into your top choice colleges? I'll show you how in this article.

For the first time, I'm sharing my full, unedited letters of recommendation as examples for you. These are the exact letters submitted when I applied to college. Even better, you'll see exactly what my Harvard admissions officer underlined—what really stood out as important and noteworthy.

Which science classes are you required to take in high school, and what will you learn in them? Which science subjects will colleges expect you to have studied, and how can you impress them by exceeding these expectations?

Read this guide to learn about the standard science curriculum, what kinds of AP and IB science courses there are, college expectations, and how you can exceed colleges' expectations and use your high school science classes to ultimately strengthen your transcript.

Are you a Cancer and wondering which signs you're most compatible with? Or maybe you want to get to know a certain Cancer better, but you're not sure how strong of a match you two will be? This guide explains everything you need to know about Cancer compatibility, including what Cancers need in a match, how compatible each sign is with Cancers, and how Cancers can strengthen their relationships with others (as well as how others can strengthen their relationships with Cancers)!

Are you studying astrology moon signs and learned that you or someone close to you is a Gemini moon? Maybe you're still confused about how moon signs fit in with the rest of astrology? We're here to help! Read this guide to learn all about what moon signs are in astrology and how you can find your own moon sign. We'll then take a deep dive into Gemini moons and explain how this moon sign can affect everything from how you feel about yourself to how you chill out. We end with an overview of how Gemini moon pairings work with every sun astrology sign.

Do Aries and Pisces get along? If you're wondering how compatible these ram and fish signs are, this is the guide for you! We dive into Aries and Pisces compatibility in multiple areas. We also discuss how well Aries and Pisces get along (or don't) in romantic relationships, friendships, families, and the workplace. Finally, if you're worried about this pairing, we give advice to make the relationship stronger, or just avoid conflict in the future.

How do you like to spend your time after school? Did you know that how you choose to spend this time could be one of the most important ways you shape your future?

Extracurricular activities are a critical component of your college application, and you need to impress colleges with your interests. But you might not know what good extracurricular activities look like or what you should be spending your time on.

We've got you covered here in our guide of hundreds of examples of extracurricular activities. Read on to get some inspiration for how to spend your valuable free time during high school!

Those applying to college—especially those in New York City—have most definitely heard of CUNY, a famous university system in New York. But what does CUNY stand for? Even more importantly, what is CUNY in terms of the schools it comprises, the academics it offers, and the opportunities it provides students?

We look at all of these questions in detail below, beginning with an overview of the CUNY meaning. We also go over the pros and cons of attending a CUNY school and give you helpful tips for picking the best CUNY school for you.

After you take your AP exams, you’ll need to wait roughly two months to receive your scores. That’s a long time! Is there any way to get your AP scores early? In most cases no, the College Board won’t release any early AP scores. However, some people claim to have found a sneaky workaround that could get you your AP scores a few days earlier than anticipated.

Read our guide to learn about the safe way to potentially get early AP scores, what you should definitely avoid when trying to get AP scores early, and what your options are if you need your AP scores by a certain deadline.

Many people are familiar with the idea of all-girls' schools for elementary, middle, and high school, but did you know there are also women-only colleges?

In this article, we discuss what women's colleges are and why you'd want to apply to them. We'll also go over the top 17 women's colleges in the US and explain why these schools made the cut.

Getting into elite schools like Harvard, Yale, Princeton, Stanford, and others is a goal of many high school students. How exactly to accomplish this is often a mystery to students and parents going through the admissions process. Lots of unhelpful and vague advice abound, especially from people who have never gained admission themselves to these schools.

In high school, I got into every school I applied to, including Harvard, Princeton, MIT, and Stanford, and I attended Harvard for college. I also learned a lot about my classmates and the dynamics of college admissions in ways that were never clear to me in high school. Now, I'm sharing this expertise with you.

I've written the most comprehensive guide to getting into top schools. I'm going to explain in detail what admissions officers at Ivy League schools are really looking for in your application. More importantly, I'm going to share an actionable framework you can use to build the most compelling application that's unique to you.

GPA is a measurement of your academic success in high school that colleges will consider very strongly in the admissions process. But what is a GPA scale?

Different high schools may use different GPA scales, and it's important to know how these scales work so that you get a better idea of where you stand. In this article, I'll tell you what a GPA scale is and the types of scales you might see used at your high school.

One of the first thoughts you might have after getting back your ACT or SAT score is how well you would have done on the other test. Luckily, SAT to ACT conversion (and ACT to SAT conversion) is possible!

In this post, we provide conversion charts from the test makers themselves to help you with score conversions between both the current and old versions of the SAT and the ACT. We also look at whether certain colleges go easier on the SAT or ACT—and what you can do about it.

What is SAT School Day? Does your school participate in SAT School Day, or have you heard of high school students being able to take the SAT during school hours? How does this work? How is SAT School Day different from other SAT test days? And can these SAT scores be sent to college? We’ve answered all your SAT School Day FAQ in this guide!