5,000 Hours of Proof
Hello! This is me, Harry Black. I hold a masters degree in chemical engineering from the University of Sheffield in England and have tutored professionally since I was 16. Now being 25, I have almost a decade of experience teaching anywhere from the ages of 4 through to 20+ across: math, biology, chemistry, English, university engineering and verbal and non verbal reasoning.
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My Experience:
• 5000+ hours of tutoring experience
• Explore Learning Tutor of the Year
• Tutor Cubed advanced level math tutor
• ISEB Question Creator for private school entrance exams
• Content Author for online tutoring platform Compass
• University Graduate Teaching Assistant for chemical engineers
• Elmwood Day Camp science specialist
Tutoring Services
SAT Tutoring
Focused SAT math preparation that builds problem-solving confidence, strengthens core concepts, and trains students to spot patterns and shortcuts under timed conditions.
ACT Tutoring
Targeted ACT math coaching that sharpens speed and accuracy, fills in skill gaps, and helps students master the specific question styles they’ll see on test day.
High School Math
Ongoing support for Algebra, Geometry, Precalculus, and beyond—designed to clarify tough topics, rebuild foundations where needed, and turn daily classwork into long-term understanding.
Elite SAT & ACT Math Coaching
Personal Math Tutoring
Personalized, in-depth one-on-one tutoring sessions tailored to each student's specific needs in SAT, ACT, and general mathematics. It focuses on building strong mathematical skills and boosting confidence to achieve academic success. Sessions are held in-person in the Pleasantville, NY area, with flexible scheduling options. Students receive customized lesson plans designed to improve performance and understanding.
Group Math Classes
Want to learn with friends? Small group tutoring sessions designed to enhance learning through collaborative exercises in SAT and ACT mathematics. It encourages peer interaction and shared problem-solving to improve understanding and engagement. The classes are intended to be in-person in Pleasantville, NY, with future plans for online formats. It’s ideal for students seeking a supportive, communal learning environment.
Online Math Tutoring
Flexible, personalized virtual tutoring sessions for students preparing for the SAT, ACT, or seeking general math improvement. Delivered through Microsoft Teams, it allows students to receive expert guidance regardless of location, with scheduling that fits their routine. This service aims to expand access and convenience while maintaining high-quality instruction.
Beyond the numbers
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​The aims of Blackline Tutoring go beyond the grades or results of a test.
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​Success and academic achievement are at the forefront of what I aim to provide, but a number is not the true picture of a students maths ability.
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I look to support any student with their goals and aims for their specific future in maths.
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Beyond just a number at the end of their education, we look to develop all students into effective and competent mathematicians.