Skip to content
Dibs Fall 2026

MATH M209A

Cryptography

Course statistics

Predicted GPA
3.44
n = 22 · 2 terms · ± 0.093
A range
64%
of letter grades
Taken P/NP
0%
— of those passed
D / F / W
4.5%
incl. withdrawals

Sections in Fall 2026

Sections offered, with live enrollment and predicted GPA
Section Status Enrolled Seat risk Meets Instructor Predicted GPA
Lec 1 Open
2 of 15
13% full
 could fill MW 4:00pm-5:50pm The Staff
3.44n=22 · course average

Enrollment history

Final enrollment per term, averaged across that term's sections. Four years deep, summer excluded. Per-section live curves are on each section page.

  • 1221F
  • 1024W
Enrolment by term: 21F 12, 24W 10
Peak 12 Most recent 10 in 24W 2 terms on record

Grade distribution

  • A+ 6 · 27.3%
  • A 6 · 27.3%
  • A- 2 · 9.1%
  • B+ 3 · 13.6%
  • B 4 · 18.2%
  • F 1 · 4.5%

Grey bars are non-letter outcomes — P/NP, S/U, incompletes. They are excluded from the GPA entirely rather than scored, because counting a P as a 4.0 would be a fabrication.

By instructor

Instructor Predicted Raw n Terms A range
OSTROVSKY, RAFAIL 3.49 3.51 22 2 64%

“Predicted” is shrunk toward the course average, which is itself shrunk toward the department — so an instructor with a handful of students sits near the course mean rather than topping the list.

By term