This book is unusual in that it is neither written by a math teacher or professor nor written by a well-known author. Instead, this book is written by two high school seniors who have a fresh, holistic, and matured understanding of the high school math curriculum. The book includes a summary of essential mathematical skills, an overview of the major topics, and helpful tips for each high school mathematics course with the goal of leading students on the path to success in high school mathematics and pursuing college-level mathematics with a well-prepared mindset. Families of incoming high school students can use it to fill any gaps in the lack of understanding of the American high school math curriculum. Current high school students can use it to diagnose any problems or misunderstandings that may exist in their comprehension. This is not a math textbook, but a concise guide.