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EPS SCI 3

Astrobiology

5 units Life Sciences Physical Sciences

Sections & times

Lecture and discussion. The registrar has published a final exam time.

Fall 2026: 1 lecture and 15 discussions. Nothing here is open. The oldest of these readings was 3 hours ago.

Grades

3.51

Average grade awarded in EPS SCI 3. Not a student rating: this is what the grades were.

In the A range

66%

of the 1,634 letter grades

D, F or W

3.5%

of every letter grade awarded, plus withdrawals

Taken pass/no pass

5%

97% of those passed

The registrar's own records: 1,634 grades over 4 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 4 terms ran 3.21 to 3.80.

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

  • A+ 444 · 51.7%
  • A 174 · 20.3%
  • A- 98 · 11.4%
  • B+ 55 · 6.4%
  • B 38 · 4.4%
  • B- 19 · 2.2%
  • C+ 7 · 0.8%
  • C 6 · 0.7%
  • C- 8 · 0.9%
  • D+ 3 · 0.3%
  • D 2 · 0.2%
  • D- 2 · 0.2%
  • F 2 · 0.2%
  • P 20 of 880
  • I 2 of 880

Percentages are of the 858 letter grades. Grey bars are non-letter outcomes: passes (P) and 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

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 Fall 2026
MARGOT, JEAN-LUC reviews ↗ 3.51 3.51 1,634 4 66% very light not teaching it
TREUDE, TINA IRENE reviews ↗ 3.76 3.77 858 2 83% very light Waitlist, 3 of 15 places taken
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 EPS SCI 3

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.

What the work looks like

  • 2 exams, said by 8 reviewers
  • Quizzes mentioned, no number given, said by 2 reviewers
  • 8 problem sets, said by 8 reviewers
  • Labs mentioned, no number given, said by 2 reviewers

Read from 50 reviews about 1 month ago. dibs counts only what a review actually states, so a kind of work nobody mentioned is absent rather than zero.

Read the source reviews

In Falls

Ran in 4 of the last 5 Falls. dibs has no record of it in any quarter since Fall 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, three hours; discussion, one hour. Origin, evolution, distribution, and future of life on Earth and in universe. Course material primarily from planetary and Earth sciences, paleontology and biology, astronomy, chemistry, and physics. P/NP or letter grading.

Sections in Fall 2026

You enroll in the discussion, not the lecture, so a discussion's status is the one that decides whether you get in. A lecture can read open while every discussion under it is full.

Seat counts as of : the oldest of these 16 readings. Seat readings are snapshots, not live availability. Their timestamps show when dibs last checked.

Final enrollment, averaged across each term's sections: between 418 and 442 a term over 4 terms, summer excluded, most recently 441 in Fall 2024. That is the shape across years, not this term, which is above.

From the people who took it

Student reviews

What taking EPS SCI 3 was like: the work, the teaching, and what students wish they’d known.

Write a review

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

Community guidelines

Seats over time in Fall 2026

How each lecture has filled since dibs first saw it.

A dot is a reading where something moved: the seat count, the status, or the waitlist.

What a flat run means, and where a line starts

Flat between dots means it did not drift, it held and then jumped, and a line starts when dibs first saw that lecture rather than reaching back before it existed. A lecture that has never moved draws a flat line across the whole window, and one with two or three readings draws a line joining them, which is too few to read a trend from.

Lec 1 · Treude, T.I. and Mainzer, A. · 440 of 440 enrolled

Nothing read since 1 Oct, 3 hours ago. Over about 2 months before that, filled by 46.

440 of 440 · no seats left in its discussions
17 Aug 12:329 Sep 00:521 Oct 13:12 · 3 hours ago
dibs read 168 of the 565 hours its hourly record covers, 30%, and did not look in 397. dibs had no hourly record before 8 Sep, which is the other 517 of 1082 plotted.440 of 440 enrolled at the newest reading, 3 hours ago, and no seats left in its discussions. Seats from 17 Aug 12:32 to 1 Oct 13:12, 394 to 440. dibs read 168 of the 565 hours its hourly record here covers, 30%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 397 hours dibs was keeping a record and did not reach this section. Nothing before 8 September at 01:00, where this section's record starts, has a read either way, which is 517 hours of this window. Where the drawing is faint or broken, that never means the readings are doubtful. It means the stretch between them is unaccounted for.
How readings and alerts work

A reading and an hourly record are different things, and most charts here hold more of the second missing than present. dibs has taken readings of a section since long before it began keeping an hour-by-hour log of when it looked, so the empty stretches are dibs saying it was not keeping that log yet, not that it looked and found nothing. That is the age of the record and not a fault.

Seat counts show the last successful read, not live availability. Refreshes can be delayed by request limits or upstream interruptions. Watched sections receive priority, but an hourly update for every section is not guaranteed.

The registrar can change a seat count between our checks. Alerts depend on dibs detecting an opening and completing delivery; a quiet watch does not prove that no seat opened. Check the registrar before enrolling.