"Arthur is not only the coolest tutor out there, but also, without question, the best. Arthur helped me buckle down and with his help I got a fantastic score.  He makes tutoring sessions hilarious and entertaining (which is hard to do for an ACT tutor!), always stayed longer than we had agreed on to help me with extra practice, and is even a solid pool player.  Simply put, what a guy!" - Eli Adler

"Even after we moved to San Francisco, my son insisted on tutoring with Arthur over Skype. He has this way of seeing what neither my son nor I could. He didn’t just teach him content. He taught him a new approach to problem solving, that honestly I wish I had learned myself at such a young age. " - Jessica Chang

"Hell, some of their ideas on problem solving I wish I knew when I was younger. These guys are sharper than some of the consultants my company brings in. I had Natalia tutor my daughter, but everyone at Black Slate teaches a radical honesty about what you know, what you don’t, and what’s in the middle." - Joe S.

"Arthur is super analytical. He noticed that my son Andrew got wrong any problem he spent more than 2 minutes on. When he solved a problem quickly he did it right, but when it took a while it meant that he read it wrong, or didn’t know how to do it period. Arthur picked up on these little things and raised Andrew’s SAT score in math by 150 points in a month of tutoring. Also Arthur was just fun to have around." - Melissa M.

"Arthur takes SAT tricks to a new level. There are problems that take SO MUCH LONGER to solve without a trick (like complex equations, or fraction comparisons), and Arthur just knows them all. Like, yeah you can totally solve for X here, but that will take you 5 minutes instead of 1. And that has made all the difference, even just knowing that all the hard problems don’t need to be so hard, and are just a lesson away from being easy. Thanks Arthur! " - Jonathan H.

"Arthur uses a lot of all these crazy resources. But if I’m having trouble with something specific, he can just come up with a new problem on the spot. He’s wicked smart. And he just automatically knows the category of problem I’m struggling with and can come up with the easy and the hard versions of everything. And then he’ll just give me a bunch of problems until I’m comfortable with it. " - Rebecca Joy