CS 421 Summer 2026 exams are AI-proctored online through ProctorU. Exam access is gated by an LTI integration on a separate PrairieLearn course instance (Su26-LTI); a link will be posted before each exam window.
There are three midterms plus a Final Exam window for retakes. See the Exam FAQ for how retakes work.
| Exam | Start Date | End Date | Coverage |
|---|---|---|---|
| Midterm 1 | June 12, 2026 | June 14, 2026 | Recursion, ADTs, HOFs, Lambda Calculus, Big-Step Semantics |
| Midterm 2 | July 10, 2026 | July 12, 2026 | CPS, Interpreters, Type Classes, Grammars, Regular Languages, LL Parsing |
| Midterm 3 | July 31, 2026 | August 2, 2026 | LR Parsing, Unification, Small-Step Semantics, Monotype Semantics |
| Final (retakes) | August 6, 2026 | August 7, 2026 | Retake of mastery areas from M1, M2, M3 |
Notes:
- Exam windows run from Friday through Sunday so students can pick a time that works for their schedule.
- You sign up for a specific time slot through ProctorU. Slots can fill up; do not wait until the last day.
- If you miss your exam appointment, email Mattox Beckman ASAP to make arrangements.
You may also be interested in the Lecture Schedule or the Exam FAQ.