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C&EE 266 · Lec 1

Environmental Biotechnology

Fall 2026Hafeznezami, S. and Mahendra, S.4 units

dibs reads this section's seats hourly, like everything else, but it does not send alerts for graduate courses yet.

Seats, time, final and grades

Seats

Open, 1 seat left.

19 of 20 enrolled.

Meets

MW 12:00pm-1:50pm

Every meeting the registrar lists for this section.

Final

None on the page dibs read

No exam time on the page dibs read. That is not the registrar saying there is no final.

Grades

3.78
predicted, all instructors · 88 grades

88 letter grades, everyone who has taught C&EE 266.

Read 2 hours ago. The latest refresh is overdue. Seats and instructors may have changed since. Check the registrar before enrolling.

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Before you can enroll

From the registrar

Students who enroll in upper-division courses offered by the Samueli School without completing the requisites are subject to disenrollment after the second class meeting. If necessary, consult with an OASA counselor through MyUCLA Message Center.

Restrictions read 8 days ago. dibs re-reads these slowly because they rarely change, and it does not sweep graduate courses at all, so this one has no faster cadence to move to. Check the registrar.

When it meets

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Meets: MW 12:00pm-1:50pm

Boelter Hall 4283

Grades

3.78
predicted, all instructors · 88 grades

1 person has taught C&EE 266 in the grade record: MAHENDRA, SHAILY at 3.80 over 88 grades.

A range
89%
P/NP
-
letter grade only
D/F/W
0.0%

Full grade history for C&EE 266

What students say

dibs measures outcomes: grades, seats, how fast it fills. For what the class is actually like to sit in, BruinWalk has the reviews.

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.

Will it still be here

Not a question any more: see the notice at the top of this page.

Final enrollment per term from four years of grade data. Summer excluded: different population, different pass structure.

  • 2621F
  • 2822F
  • 2124F
  • 1425F
Enrollment by term: 21F 26, 22F 28, 24F 21, 25F 14

Peak 28 · most recent 25F at 14

Seats over time

Nothing read since 1 Oct, 2 hours ago. Over about 2 months before that, filled by 5.

2 times reopened
19 of 20 · 1 left
17 Aug 15:079 Sep 07:091 Oct 23:12 · 2 hours ago
dibs read 168 of the 842 hours its hourly record covers, 20%, and did not look in 674. dibs had no hourly record before 27 Aug, which is the other 247 of 1089 plotted.19 of 20 enrolled at the newest reading, 2 hours ago, with 1 left. Seats from 17 Aug 15:07 to 1 Oct 23:12, 14 to 19. dibs read 168 of the 842 hours its hourly record here covers, 20%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 674 hours dibs was keeping a record and did not reach this section. Nothing before 27 August at 22:00, where this section's record starts, has a read either way, which is 247 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.

A dot is a reading where something moved: the seat count, the status, or the waitlist. Flat between dots joins recorded counts; changes between reads may be missed. The line starts when dibs first saw this section rather than reaching back before it existed. The last one is the last time dibs read this section, moved or not, and that was 2 hours ago. It is where the line stops, not where the count is now.

Show the readings (15)
Recorded Enrolled Capacity Status Waitlist Hours read
1 Oct 23:12 19 20 open 0 of 5 13 of 46
30 Sep 02:02 19 20 open 0 of 5 42 of 150
23 Sep 21:42 20 20 waitlist 0 of 5 3 of 9
23 Sep 13:12 19 20 open 0 of 5 4 of 13
23 Sep 01:32 15 15 waitlist 4 of 5 34 of 121
18 Sep 01:12 15 15 closed 5 of 5 3 of 8
17 Sep 18:12 15 15 waitlist 4 of 5 2 of 5
17 Sep 14:42 15 15 closed 5 of 5 2 of 4
17 Sep 11:12 15 15 waitlist 4 of 5 12 of 45
15 Sep 15:32 15 15 waitlist 3 of 5 4 of 12
15 Sep 04:32 15 15 waitlist 1 of 5 4 of 12
14 Sep 17:02 15 15 waitlist 0 of 5 25 of 100
10 Sep 14:40 15 15 waitlist 1 of 5 20 of 169
3 Sep 14:40 15 15 waitlist 0 of 5 13 of 408, 247 no hourly record
17 Aug 15:07 14 15 open 0 of 5 -
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.

Class chat

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