The ACT & SAT, reverse-engineered · Dallas & online
Your curriculum
is complex.
The test is simple.
Your student inherits a method our Directors spent decades reverse-engineering — the shortcut, not the slog — and works less hard for more score. It starts with a free Welcome Call.
A perfect score isn’t a gift. It’s a solved problem — and somebody already solved it, so your student doesn’t have to.
How it works
- 01A free Welcome Call
- 02An Initial Assessment
- 03Join the club
The track record
ACT·SAT·PSAT·TSI·GRE·GMAT·LSAT
“My ACT superscore is a 34 and a 1450 SAT — and none of that could have been possible without you. You’ve been a great mentor and tutor.”
Liam T. · Plano, TX
960 → 1380
PSAT to SAT · Carlo G., Plano
“Mark is an ACT wizard — very engaging and adaptable to all styles of learning! He helped my son get a 36!”
Ashley H. · Dallas, TX
20 → 31
ACT Science · in five days
“After just two weeks studying with James, I was knocking out the quantitative section more efficiently than ever. Three weeks in, I sat for an official GMAT and scored a 740!”
Nick E. · on to Kellogg at Northwestern
“She got a 35 on her third attempt and is super excited!”
Holly R. · Dallas
“Our daughter loved her lessons with Josh and Mark and felt very prepared going into her ACT tests. We are grateful to KYBO for helping her achieve her full potential.”
Christy M. · Dallas, TX
510 → 640
GMAT · Ashlesha S. · into the SMU Cox MBA
“We always recommend you as THE person to work with for these tests.”
A multi-student family
25 → 34
ACT English · in 4.5 hours of lessons
“His patience, wit, and creativity made each lesson fun and fruitful. My reading grew from a 610 with a prior tutor to a 710 with Mark. Five years later I scored in the 99th percentile on the GMAT verbal — with no additional prep.”
Brandt W. · Charlottesville, VA
“We will always appreciate the great influence and success Mark has bestowed upon our three boys.”
Asha M. · Houston, TX
Up 100 points on the GMAT — with a 35-percentile jump in math.
Lily M.
“It was a pleasure to work with Mark on my GRE! His energy, encouragement, and knowledge made prep easier — and I was accepted into an MBA program.”
Henslee O. · Wichita Falls, TX
“She was over the moon after her assessment call — she loved it.”
Post-assessment feedback
A perfect ACT — from online group instruction alone.
KYBO group course
A National Merit finalist — from a group course alone.
KYBO group course
Trusted by families from Highland Park, St. Mark’s, Hockaday, Jesuit, Ursuline, ESD, Cistercian, The Covenant School & Trinity Christian Academy.
Membership from $85/month.·Private one-on-one, $150–$250/hour by instructor level.