Supplemental Instruction (SI)

What is Supplemental Instruction?

Supplemental instruction (SI) is a peer-led, informal study group designed to help students succeed in academically demanding courses by:

  • teaching new ways to break down and understand difficult material
  • preparing students for lectures and exams
  • offering a friendly place to ask questions, make mistakes and share study tips
  • improving student confidence and performance
  • offering three regularly scheduled, weekly sessions for each SI supported course

Students who attend at least three SI sessions earn at least half a letter grade or better in the course.

Who can attend a session?

SI is free and open to all students enrolled in courses offering supplemental instruction.

Who leads the sessions?

SI sessions are led by a peer who holds a cumulative 3.5 or higher GPA and has either already successfully taken the course or mastered the material. SI leaders attend the course lectures for courses they lead, and they tailor their sessions to match the needs and pace.

Student taking notes during Supplemental Instruction session

What classes offer SI?

We currently offer SI for BIOL 2150 and 2170, CHEM 1090, 1110, 1120, 1230,1240 and 2410, EXSC 2560 and 2570, PHYS 2130, MATH 1330, MATH 1850, and MATH 2450. Find out when and where sessions are offered for your course on the SI Session schedule.

SI leader working with a student

Interested in becoming an SI leader?

Learn more about being an SI leader and to download the application. If you have any questions, contact Julie Radwanski at


Last Updated: 5/3/22