SAT · AP · college essays

Hard topics, explained simply.

One-on-one SAT and AP tutoring from a student who just went through it and got in. We work through your real practice problems until they click.

AP Chem question

How many moles are in 36 g of water?

looks scary, right?
How we'd explain it
  1. 1Molar mass of H₂O = 18.02 g/mol
  2. 2moles = mass ÷ molar mass
  3. 336 ÷ 18.02 ≈ 2.0 mol
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  2. Send your questions

    Add the practice problems or essay draft you're stuck on.

  3. Meet online

    Work through it together on video and a shared whiteboard.

Portrait of Rastin, the tutor behind RastyExplains
that's me!
hi, I'm Rastin

About me

I'm an Honors Biology student at the University of Toronto who went through the SAT, AP exams and college applications not long ago. I remember which topics felt impossible at first and which tricks finally made them make sense.

I break hard ideas into small steps, use your own homework and practice tests, and keep sessions relaxed so you can ask anything. You leave knowing how to solve the next problem on your own.

  • SAT & AP tutor
  • College essay coach
  • Toronto, ON
  • Online sessions

My results

1530 (790M; 740R&W)
SAT score
4.0
GPA
University of Toronto
Honors Biology student

Accepted to

  • UCLA
  • UC San Diego
  • UC Irvine
  • University of Chicago
  • University of Toronto
  • University of British Columbia
  • McGill University
  • Johns Hopkins University