Lecture.
The registrar has published a final exam time.
Fall 2026: 5 sections.
2 sections
are open.
The oldest of these readings was 23 minutes ago.
Grades
3.86
Average grade awarded in COM SCI 259. Not a student rating: this is what
the grades were.
The mean of every letter grade the registrar has published for this course, pooled across every instructor who has taught it. It is not shrunk toward anything, because a course average cannot be pulled toward itself. Standard error 0.029.
In the A range
The share who got an A minus or better: A+, A or A minus, out of every letter grade awarded in this course. Pass/no pass outcomes are counted separately and are not in this figure.
92%
of the 457 letter grades
D, F or W
The share who finished with a D or an F, or withdrew. The closest thing here to a difficulty signal: it counts the people the course went badly for, which an average grade hides. Pass/no pass and S/U outcomes are counted separately and are not in this figure, so a no-pass is not in it either.
0.7%
of every letter grade awarded, plus withdrawals
Taken pass/no pass
The share who took this pass/no pass rather than for a letter grade. A high number usually means it is popular as a GE with people protecting an average. These students are excluded from the figure at the top of this block.
-
the registrar has this letter grade only this term
The registrar's own records: 457 grades over 8 terms, Fall 2021 to Fall 2025.
Every instructor is pooled here.
›iWhat is inside that record
No summer session is in that record.
The table below splits them, and term averages across those 8 terms ran 3.74 to 3.98.
Historical grades for CONG, JINGSHENG JASON, across recorded terms. The course summary above includes all professors.
A+
33 · 29.2%
A
51 · 45.1%
A-
15 · 13.3%
B+
10 · 8.8%
B
3 · 2.7%
B-
1 · 0.9%
Percentages are of the 113 letter grades. Grey bars are non-letter outcomes.
›iHow 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
“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.
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.
Ran in 3 of the last 5 Falls, so it turns up in Fall sometimes rather than dependably.
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; outside study, eight hours. Review of current literature in area of computer science system design in which instructor has developed special proficiency as consequence of research interests. Students report on selected topics. May be repeated for credit with topic change. Letter grading.
Sections in Fall 2026
Seat counts as of : the oldest of these 5 readings. Seat readings are snapshots, not live availability. Their timestamps show when dibs last checked.
Class: Graduate Students
Registrar's Restrictions cell.
Oldest reading: 21 hours ago.
Lec 1Lec 3Class: Master of Engineering
Registrar's Restrictions cell.
Oldest reading: 21 hours ago.
Lec 91Students 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.
Registrar's Class notes.
Oldest reading: 4 days ago.
Lec 1Lec 3Lec 4Lec 91
Eligibility details are not fully read. Missing text does not mean there are no requirements. Open section details
2 seats left.38 of 40 enrolledhigh risk
A guess about whether this will still be here at your enrollment pass, from how full it is now and how fast classes like it have filled before. Seat risk is a prediction and seat status is what the registrar said: they are two things, and this page keeps them apart.
limited by standing: Graduate Students: restrictions read 21 hours ago
no enrollment count published-
A guess about whether this will still be here at your enrollment pass, from how full it is now and how fast classes like it have filled before. Seat risk is a prediction and seat status is what the registrar said: they are two things, and this page keeps them apart.
0 of 10 places taken.20 of 20 enrolledhigh risk
A guess about whether this will still be here at your enrollment pass, from how full it is now and how fast classes like it have filled before. Seat risk is a prediction and seat status is what the registrar said: they are two things, and this page keeps them apart.
limited by standing: Graduate Students: restrictions read 21 hours ago
0 of 30 places taken.30 of 30 · 7 over enrolledhigh risk
A guess about whether this will still be here at your enrollment pass, from how full it is now and how fast classes like it have filled before. Seat risk is a prediction and seat status is what the registrar said: they are two things, and this page keeps them apart.
13 seats left.2 of 15 enrolledhigh risk
A guess about whether this will still be here at your enrollment pass, from how full it is now and how fast classes like it have filled before. Seat risk is a prediction and seat status is what the registrar said: they are two things, and this page keeps them apart.
limited by major: Master of Engineering: restrictions read 21 hours ago
Final enrollment, averaged across each term's sections:
between 19 and
43 a term
over 8 terms, summer excluded, most recently
39 in Fall 2025.
That is the shape across years, not this term, which is above.
From the people who took it
Student reviews
What taking COM SCI 259 was like: the work, the teaching, and what students wish they’d known.
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.
How each lecture has filled since dibs first saw it.
This course runs 4 lectures; the legend under the chart picks one.
A dot is a reading where something moved: the seat count, the status, or the waitlist.
›iWhat 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
· Cong, J.J. and Ding, B.
· 38 of 40 enrolled
Filled by 8 over about 1 month
enrolled
38 of 40 · 2 left
5 readings, no hourly record
42cap 403828
hours read
18 Aug 21:409 Sep 22:411 Oct 23:42
dibs read 168 of the 501 hours its hourly record covers, 34%, and did not look in 333. dibs had no hourly record before 11 Sep, which is the other 558 of 1059 plotted.38 of 40 enrolled at the newest reading, 23 minutes ago, with 2 left. Seats from 18 Aug 21:40 to 1 Oct 23:42, 30 to 38. dibs read 168 of the 501 hours its hourly record here covers, 34%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 333 hours dibs was keeping a record and did not reach this section. Nothing before 11 September at 03:00, where this section's record starts, has a read either way, which is 558 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.
Same seat count, but the status moved and came back, the waitlist went 4 of 10 to 0 of 10, and the seat count moved and came back over about 1 month
enrolled
20 of 20 · no seats left
5 readings, no hourly record
22cap 2013
hours read
18 Aug 21:409 Sep 22:411 Oct 23:42
dibs read 168 of the 501 hours its hourly record covers, 34%, and did not look in 333. dibs had no hourly record before 11 Sep, which is the other 558 of 1059 plotted.20 of 20 enrolled at the newest reading, 23 minutes ago, and no seats left. Seats from 18 Aug 21:40 to 1 Oct 23:42, 20 to 20. dibs read 168 of the 501 hours its hourly record here covers, 34%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 333 hours dibs was keeping a record and did not reach this section. Nothing before 11 September at 03:00, where this section's record starts, has a read either way, which is 558 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.
dibs read 168 of the 501 hours its hourly record covers, 34%, and did not look in 333. dibs had no hourly record before 11 Sep, which is the other 558 of 1059 plotted.30 of 30 enrolled at the newest reading, 23 minutes ago, and no seats left. Seats from 18 Aug 21:40 to 1 Oct 23:42, 0 to 30. dibs read 168 of the 501 hours its hourly record here covers, 34%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 333 hours dibs was keeping a record and did not reach this section. Nothing before 11 September at 03:00, where this section's record starts, has a read either way, which is 558 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.
dibs read 168 of the 501 hours its hourly record covers, 34%, and did not look in 333. dibs had no hourly record before 11 Sep, which is the other 558 of 1059 plotted.2 of 15 enrolled at the newest reading, 23 minutes ago, with 13 left. Seats from 18 Aug 21:40 to 1 Oct 23:42, 1 to 2. dibs read 168 of the 501 hours its hourly record here covers, 34%. An hour marked as read confirms a check, not continuous monitoring. That check recorded no change; changes between checks may be missed. For 333 hours dibs was keeping a record and did not reach this section. Nothing before 11 September at 03:00, where this section's record starts, has a read either way, which is 558 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.
›iHow 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.