The most effective essays to write in the United States often focus on personal experiences, critical thinking, and argumentation. Personal essays, such as the Common Application's "Why This College" prompt, allow students to showcase their unique perspectives and stories. These essays should be authentic and reflective of the student's voice. On the other hand, argumentative essays, like those required for AP English courses, encourage students to develop and support a thesis with evidence. This type of writing hones analytical skills and the ability to construct persuasive arguments. According to the National Assessment of Educational Progress (NAEP), students who engage in critical thinking and argumentative writing demonstrate higher levels of academic achievement and are better prepared for college and career success.

Personal essays are particularly valuable because they provide insight into a student's character, values, and experiences. The Common Application reports that admissions officers place a high priority on these essays as they offer a glimpse into the applicant's personality and potential fit within the university community. For instance, the "Why This College" prompt invites students to discuss how their interests align with the institution's offerings, demonstrating their research and passion. This approach is effective because it allows students to connect their personal narrative to their academic and professional goals.

In contrast, argumentative essays are crucial for developing analytical skills. The NAEP found that students who engage in argumentative writing perform better on standardized tests and are more likely to succeed in college-level coursework. These essays require students to research, evaluate evidence, and construct a logical argument. This process not only enhances their writing abilities but also their critical thinking and problem-solving skills. For example, in an AP English Literature course, students may be asked to analyze a literary work and argue for or against a particular interpretation. This exercise not only helps students understand the text but also prepares them for the rigorous demands of higher education.

In conclusion, personal essays and argumentative essays are the most effective essays to write in the United States. These essay types allow students to showcase their unique perspectives, develop critical thinking skills, and prepare for academic and professional success. The NAEP and Common Application data support the importance of these essay types in the admissions process and academic achievement.