Instructor Details

Explore the profile and expertise of our professional instructor.

Marcus Delaney

Marcus Delaney

Lead Instructor

0 Students
1 Courses

Founder and head of school. Taught AP Physics and Algebra II for eleven years in Denver public schools, then spent two years writing science curriculum for a district of forty thousand students. He started Kestrel in 2025 after watching too many capable kids get priced out of tutoring at ninety dollars an hour, and he still teaches one AP Physics 1 section himself every fall on the grounds that a head of school who stops teaching stops understanding students.

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Qualifications

  • MEd in Curriculum and Instruction, University of Colorado Boulder
  • BS in Physics, Colorado State University
  • Colorado Professional Teacher License, Secondary Science

Professional skills

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Kestrel is an online school based in Denver, Colorado, teaching students across the United States and in more than thirty countries. We run small live sections and self-paced courses in AP and honors subjects, SAT and ACT preparation, college application writing, and academic English for international applicants. Live sections cap at sixteen students, every course is taught by a licensed teacher or a subject specialist rather than a rotating pool of tutors, and every recording, transcript and worked solution stays in your library for a full year. Sections run in three time zone bands, so a student in Seoul or Sao Paulo is never asked to sit a calculus class at three in the morning.

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