There's no single answer to the question of what the "worst" high school in NYC is. Different schools struggle with different issues, and what constitutes "worst" is subjective. Factors like graduation rates, test scores, student safety, and overall school climate all contribute to a school's overall quality, and data on these factors can vary widely depending on the source and how it's interpreted. Ranking schools is also complex and doesn't always capture the nuances of individual student experiences or the challenges faced by specific schools and communities.
Instead of focusing on a single "worst" school, it's more helpful to look at resources that provide data on NYC high schools, allowing you to compare schools based on the factors you consider most important. The NYC Department of Education website is a good starting point.