The ACT is the exam high-school seniors take to gain entrance to college. Typically there is a specific score you'll need to even be considered for acceptance, generally, it's higher than what you made. That's how it was for me, at least.
I've taken the ACT four times and will take it again in a month. For teenagers like me that have test anxiety, the ACT is the devil. I would like to think that I am an intelligent individual (according to my GPA) but the ACT says otherwise. It even goes as far to say I'm below average on some sections of the test.
The ACT is comprised of four subjects. English, Math, Reading, and Science in that order. Some subjects take longer than others, depending on what your strengths and weaknesses are. The test is arguably four hours long, but it depends on how long your break is in the middle. My brain is so fried after taking the English and Math that the "break" isn't even necessary. It just gives me more time to stress about all the questions I guessed on.
Your score is determined by how wealthy your family is, arguably. If your family is wealthy then they can hire coaches, buy you practice books, or have you take the test as many times as it takes. I've been lucky to be given these opportunities, but that's not the case for everyone. For most, it's a one and done kind of ordeal.
The questions the ACT asks are meant to confuse you, they want you to take your time. However, the time they give you doesn't allow that. For example, the math portion of the test is sixty questions in sixty minutes. Meaning you have a minute per problem. While that may be doable on the first twenty questions, it's just not possible after that. Coaches will even tell you to only focus on the first thirty questions, to guess on the rest. What does that tell you?
The test does not gauge your intelligence, it gauges your ability to strategize.