C&EE 255B
Biological Processes for Water and Wastewater Treatment
Grades
3.56
Average grade awarded in C&EE 255B. Not a student rating: this is what the grades were.
In the A range
52%
of the 52 letter grades
D, F or W
0.0%
of every letter grade awarded, plus withdrawals
Taken pass/no pass
0%
nobody in the record took it pass/no pass
The registrar's own records: 52 grades over 3 terms, Fall 2021 to Fall 2025. Every instructor is pooled here.
What is inside that record
No summer session is in that record.
The table below splits them, and term averages across those 3 terms ran 3.47 to 3.64.
Historical grades for all professors, across recorded terms. The course summary above includes all professors.
- A+ 1 · 1.9%
- A 25 · 48.1%
- A- 1 · 1.9%
- B+ 10 · 19.2%
- B 13 · 25.0%
- B- 2 · 3.8%
- I 1 of 53
Percentages are of the 52 letter grades. Grey bars are non-letter outcomes: incompletes (I).
How the non-letter outcomes are counted
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 GPA | Raw | n | Terms | A range | Workload | Spring 2027 |
|---|---|---|---|---|---|---|---|
| STENSTROM, MICHAEL K reviews ↗ | 3.56 | 3.56 | 52 | 3 | 52% | - | not teaching it |
Why Predicted is not the Raw average
“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.
Grade records describe outcomes. For what a course is like to take, read student reviews written on dibs below or follow the separate external review link.
Workload and assignments
Work types reported in BruinWalk reviews of this course, across recorded instructors and terms. They may differ from this term's syllabus.
dibs has not read this course’s reviews, so it cannot say what kind of work it sets. That is dibs not having looked. It is not a course without papers or exams, and the reviews linked below are the answer until dibs catches up.
What comes first
dibs has not read a class page for C&EE 255B in any term it holds, so it cannot say what comes before it.
Counted in courses rather than quarters: dibs does not know which of them a department lets you take together.
In Springs
Has not run in Spring in the 4 Springs dibs holds records for, back to Winter 2022. That is 4 years of grade records rather than the course catalog, so it says what has happened and not what the department will do next.
From the terms dibs holds, which start in Fall 2021 and exclude summer. A department can run a course in a quarter it never has before.
From the registrar's catalog
Lecture, four hours; discussion, two hours; outside study, six hours. Requisites: courses 254A, 255A. Fundamentals of environmental engineering microbiology; kinetics of microbial growth and biological oxidation; applications for activated sludge, gas transfer, fixed-film processes, aerobic and anaerobic digestion, sludge disposal, and biological nutrient removal. Letter grading.
Sections in Spring 2027
From the people who took it
Student reviews
What taking C&EE 255B was like: the work, the teaching, and what students wish they’d known.
Your experience could be the first.
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External reviews are separate and do not count toward the dibs rating.