A charter middle school in New York City, serving mainly low-income, minority students.
The Promise Academy is a charter middle school, serving predominantly low-income, minority students from grades six through eight. The school opened in 2004 as one of the Harlem Children’s Zone programs to improve communities and schools in a 97-block area of Harlem, in New York City. The school provides an extended school day and year, with coordinated after-school tutoring and additional Saturday classes for children struggling in math or English language arts. As a result, students spend 50-100% more time in school per year than students in traditional public schools in New York City, depending on how far behind they are academically. The school emphasizes recruiting and retaining high quality teachers, who are incentivized and evaluated based on their success in raising students’ test scores. Students are consistently reminded of the importance of hard work in achieving success, and are given rewards for achievement, such as money or trips. The school also provides them with free medical, dental, and mental health services; and provides their parents with meals, bus fare, and other benefits. Most students who attend Promise Academy middle school subsequently enroll in a Promise Academy high school. The school spent approximately $22,300 per pupil per school year, compared to an average of approximately $18,700 per pupil in New York City middle schools (in 2017 dollars). 
Promise Academy’s website is linked here.