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You are looking at Winter 2027. Enrollment for it has not opened, so these are the registrar's early listings. dibs holds 3,430 sections for Winter 2027, read 3 days ago. Separately, it has finished 2,460 of the 3,592 courses on its current checking list for this term. Future-term coverage is incomplete, so a course with nothing here may simply not have been reached yet. Back to Fall 2026

PHYSCI 128

Me, Myself, and Microbes: The Microbiome in Health and Disease

Sections & times

Grades

3.42

Average grade awarded in PHYSCI 128. Not a student rating: this is what the grades were.

In the A range

62%

of the 71 letter grades

D, F or W

2.8%

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: 71 grades over 2 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 2 terms ran 3.07 to 3.85.

Historical grades for all professors, across recorded terms. The course summary above includes all professors.

  • A+ 10 · 14.1%
  • A 25 · 35.2%
  • A- 9 · 12.7%
  • B+ 3 · 4.2%
  • B 12 · 16.9%
  • B- 3 · 4.2%
  • C+ 1 · 1.4%
  • C 5 · 7.0%
  • C- 1 · 1.4%
  • D 1 · 1.4%
  • D- 1 · 1.4%

Percentages are of the 71 letter grades. Grey bars are non-letter outcomes.

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

Predicted GPA, raw average, sample size, terms, A range and the workload reviewers reported for every instructor with a grade record in this course
Instructor Predicted GPA Raw n Terms A range Workload Winter 2027
HSIAO, ELAINE YIH-NIEN reviews ↗ 3.43 3.42 71 2 62% - 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.

Reviews for PHYSCI 128

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.

Read the source reviews

What comes first

dibs has not read a class page for PHYSCI 128 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 Winters

Has not run in Winter in the 3 Winters dibs holds records for, back to Spring 2022. That is 3 years of grade records rather than the course catalog, so it says what has happened and not what the department will do next. dibs has no record of it in any quarter since Spring 2024.

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, 90 minutes. Requisites: course 107 or Chemistry 153A, Life Sciences 2 and 3, or 7A, 7B, and 7C. Exploration of host-microbiome interactions in health and disease, drawing upon basic properties for microbial communities, intersections with immunology, metabolism, and neurobiology. Letter grading.

Sections in Winter 2027

dibs has not read Winter 2027 for this course, so it cannot say whether it runs. dibs reads the term you are enrolling in first and the rest a little at a time; the registrar's own listing is the answer until this one catches up.

From the people who took it

Student reviews

What taking PHYSCI 128 was like: the work, the teaching, and what students wish they’d known.

Your experience could be the first.

No student reviews are available to read on dibs for this course yet. Took it? Tell the next person what helped, what was hard, and how you spent your time.

Looking for more perspectives?

External reviews are separate and do not count toward the dibs rating.

Read reviews on BruinWalk

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