Carney Curve

Boston College course evaluations · every published number, ranked class by class

Top of the board1.ECON 9902962.LAWS 8856973.PRTO 3300984.BSLW 2299975.PHIL 4932986.LAWS 8308987.SCWK 9960998.EESC 99011009.MUSP 16609610.UGMG 10109811.UNCP 55119712.SCWK 883197

Positions account for how many records stand behind each number, so one perfect review does not outrank a semester of them. Every score shown is the real average — only the ordering is adjusted.

Instructor record · Mathematics · Fall 2021 – Spring 2026

Xin Jin

Associate Professor · Mathematics · 12 evaluation records across 6 classes

On each class's board
MATH 220225th of 25 instructorsMATH 44105th of 7 instructorsMATH 33115th of 5 instructors ProvisionalMATH 33125th of 5 instructors ProvisionalMATH 88084th of 4 instructors ProvisionalMATH 8845unrated · 5 instructors on record Provisional
What the overall is made of
60BC evaluations12 records · weight ×1.0 · Fall 2021 – Spring 2026
40RateMyProfessors3 ratings · weight ×2.0 · 33% would take again
—Student reviewsno reviews — does not contribute

Sources are averaged by how much we trust each one and by how many records sit behind it, so a handful of reviews nudges the number rather than replacing it.

What the challenge rank is made of
90thMore challenging than 90% of BC instructorsranked against every one we hold
94BC — “Intellectually Challenging”12 records · raw score out of 100

Boston College's own “intellectually challenging” question — students answer it positively about courses that stretched them, so it measures intellectual challenge and NOT grading, workload or quality. Almost every BC class scores high on it, which is why it is shown as a rank rather than a score. RateMyProfessors separately rates this instructor 80 out of 100 for difficulty — that IS a difficulty measure, but it is about the person across everything they teach, not about any one class, so it is shown here rather than folded into the number above.

What the workload rank is made of
88thMore work than 88% of BC instructorsranked against every one we hold
68BC — “Workload”12 records · raw score out of 100

Boston College reports workload as one of five bands, not as a number of hours, and it does not publish what the bands mean — so this site will not translate it into hours. Higher means more work, which is not the same as worse.

Ratings from outside BC

Not evaluation data

Collected from RateMyProfessors, not from Boston College: 3 ratings, 33% would take again, difficulty 80 out of 100. Difficulty is not a quality signal in either direction — a harder course is not a worse one.

Anyone can post there — no @bc.edu check and no enrolment check — so it is weighted alongside the evaluation data, never above it.

The line

All 13 items · means across 12 records
The Professor4 items
Clearly Explains MaterialThe instructor was effective at creating an understanding of difficult subject matter.
692nd pctl
Available Outside of ClassThe instructor was available for help outside of class.
817th pctl
Brings Out Your Best WorkThe instructor motivated me to do my best work.
723rd pctl
Sparked My InterestThe course stimulated my interest in the subject matter.
723rd pctl
The Course3 items
Well-Organized CourseThe course was well organized.
8114th pctl
Clear Learning GoalsThe learning objectives for the course were clear.
8113th pctl
Useful Beyond the CourseWhat I learned is applicable beyond this course.
8111th pctl
Assignments & Feedback3 items
Assignments Help You LearnAssignments and exams contributed to my learning.
8736th pctl
Gives Feedback PromptlyI received feedback on my work in a timely manner.
9258th pctl
Meaningful FeedbackThe feedback I received on my work was meaningful.
8629th pctl
Workload, difficulty & attendanceNot ratings
WorkloadHow much work the course took outside class, on Boston College's five-band scale — the band boundaries are not published, so this is not a number of hours.
6888th pctl
Intellectually ChallengingThe course was intellectually challenging.
9490th pctl
Attendance MattersAttending class was necessary to do well in this course.
8119th pctl

Bar length is the rank against every comparable record we hold, not the raw score: BC's questions all have a median around 4.5, so a raw-scale bar would be nearly full on every row and would tell you nothing. Every bar is one ink colour — nothing here is graded green or red. The hatched bars are not ratings at all: a higher number on either describes a different course, not a better one.

Class by class

6 classes · 12 sections

How each position is worked outPositions account for how many records stand behind each number, so one perfect review does not outrank a semester of them. Every score shown is the real average — only the ordering is adjusted.

MATH 2202 Multivariable CalculusOvr53Chal87thWork81st
On this class's board25th of 25 instructors

4 sections on record · course itself rated 59 out of 100. See the full board for MATH 2202.

TermSecInstrCourseWork
Fall 202506586660
Fall 202507576060
Spring 202506485860
Spring 202507475180
All 13 items for MATH 2202
The Professor4 items
Clearly Explains MaterialThe instructor was effective at creating an understanding of difficult subject matter.
580th pctl
Available Outside of ClassThe instructor was available for help outside of class.
772nd pctl
Brings Out Your Best WorkThe instructor motivated me to do my best work.
660th pctl
Sparked My InterestThe course stimulated my interest in the subject matter.
660th pctl
The Course3 items
Well-Organized CourseThe course was well organized.
755th pctl
Clear Learning GoalsThe learning objectives for the course were clear.
775th pctl
Useful Beyond the CourseWhat I learned is applicable beyond this course.
793rd pctl
Assignments & Feedback3 items
Assignments Help You LearnAssignments and exams contributed to my learning.
8313th pctl
Gives Feedback PromptlyI received feedback on my work in a timely manner.
8936th pctl
Meaningful FeedbackThe feedback I received on my work was meaningful.
8213th pctl
Workload, difficulty & attendanceNot ratings
WorkloadHow much work the course took outside class, on Boston College's five-band scale — the band boundaries are not published, so this is not a number of hours.
6581st pctl
Intellectually ChallengingThe course was intellectually challenging.
9787th pctl
Attendance MattersAttending class was necessary to do well in this course.
798th pctl

Bar length is the rank against every comparable record we hold, not the raw score: BC's questions all have a median around 4.5, so a raw-scale bar would be nearly full on every row and would tell you nothing. Every bar is one ink colour — nothing here is graded green or red. The hatched bars are not ratings at all: a higher number on either describes a different course, not a better one.

MATH 4410 Differential EquationsOvr76Chal60thWork78th
On this class's board5th of 7 instructors

4 sections on record · course itself rated 77 out of 100. See the full board for MATH 4410.

TermSecInstrCourseWork
Spring 202401626360
Spring 202402687160
Fall 202101948960
Fall 202102798560
All 13 items for MATH 4410
The Professor4 items
Clearly Explains MaterialThe instructor was effective at creating an understanding of difficult subject matter.
828th pctl
Available Outside of ClassThe instructor was available for help outside of class.
8612th pctl
Brings Out Your Best WorkThe instructor motivated me to do my best work.
827th pctl
Sparked My InterestThe course stimulated my interest in the subject matter.
814th pctl
The Course3 items
Well-Organized CourseThe course was well organized.
8831st pctl
Clear Learning GoalsThe learning objectives for the course were clear.
8829th pctl
Useful Beyond the CourseWhat I learned is applicable beyond this course.
8614th pctl
Assignments & Feedback3 items
Assignments Help You LearnAssignments and exams contributed to my learning.
9255th pctl
Gives Feedback PromptlyI received feedback on my work in a timely manner.
9467th pctl
Meaningful FeedbackThe feedback I received on my work was meaningful.
8938th pctl
Workload, difficulty & attendanceNot ratings
WorkloadHow much work the course took outside class, on Boston College's five-band scale — the band boundaries are not published, so this is not a number of hours.
6078th pctl
Intellectually ChallengingThe course was intellectually challenging.
9260th pctl
Attendance MattersAttending class was necessary to do well in this course.
8112th pctl

Bar length is the rank against every comparable record we hold, not the raw score: BC's questions all have a median around 4.5, so a raw-scale bar would be nearly full on every row and would tell you nothing. Every bar is one ink colour — nothing here is graded green or red. The hatched bars are not ratings at all: a higher number on either describes a different course, not a better one.

MATH 3311 Algebra IOvr57Chal91stWork100th
On this class's board5th of 5 instructors Provisional

1 section on record · course itself rated 54 out of 100. See the full board for MATH 3311.

TermSecInstrCourseWork
Fall 2022015754100
All 13 items for MATH 3311
The Professor4 items
Clearly Explains MaterialThe instructor was effective at creating an understanding of difficult subject matter.
610th pctl
Available Outside of ClassThe instructor was available for help outside of class.
793rd pctl
Brings Out Your Best WorkThe instructor motivated me to do my best work.
660th pctl
Sparked My InterestThe course stimulated my interest in the subject matter.
690th pctl
The Course3 items
Well-Organized CourseThe course was well organized.
8011th pctl
Clear Learning GoalsThe learning objectives for the course were clear.
8110th pctl
Useful Beyond the CourseWhat I learned is applicable beyond this course.
816th pctl
Assignments & Feedback3 items
Assignments Help You LearnAssignments and exams contributed to my learning.
8313th pctl
Gives Feedback PromptlyI received feedback on my work in a timely manner.
9255th pctl
Meaningful FeedbackThe feedback I received on my work was meaningful.
8418th pctl
Workload, difficulty & attendanceNot ratings
WorkloadHow much work the course took outside class, on Boston College's five-band scale — the band boundaries are not published, so this is not a number of hours.
100100th pctl
Intellectually ChallengingThe course was intellectually challenging.
9891st pctl
Attendance MattersAttending class was necessary to do well in this course.
9147th pctl

Bar length is the rank against every comparable record we hold, not the raw score: BC's questions all have a median around 4.5, so a raw-scale bar would be nearly full on every row and would tell you nothing. Every bar is one ink colour — nothing here is graded green or red. The hatched bars are not ratings at all: a higher number on either describes a different course, not a better one.

MATH 3312 Algebra IIOvr60Chal60thWork93rd
On this class's board5th of 5 instructors Provisional

1 section on record · course itself rated 56 out of 100. See the full board for MATH 3312.

TermSecInstrCourseWork
Spring 202301605680
All 13 items for MATH 3312
The Professor4 items
Clearly Explains MaterialThe instructor was effective at creating an understanding of difficult subject matter.
650th pctl
Available Outside of ClassThe instructor was available for help outside of class.
731st pctl
Brings Out Your Best WorkThe instructor motivated me to do my best work.
650th pctl
Sparked My InterestThe course stimulated my interest in the subject matter.
680th pctl
The Course3 items
Well-Organized CourseThe course was well organized.
734th pctl
Clear Learning GoalsThe learning objectives for the course were clear.
753rd pctl
Useful Beyond the CourseWhat I learned is applicable beyond this course.
711st pctl
Assignments & Feedback2 items
Assignments Help You LearnAssignments and exams contributed to my learning.
8312th pctl
Meaningful FeedbackThe feedback I received on my work was meaningful.
8725th pctl
Workload, difficulty & attendanceNot ratings
WorkloadHow much work the course took outside class, on Boston College's five-band scale — the band boundaries are not published, so this is not a number of hours.
8093rd pctl
Intellectually ChallengingThe course was intellectually challenging.
9260th pctl
Attendance MattersAttending class was necessary to do well in this course.
8112th pctl

Bar length is the rank against every comparable record we hold, not the raw score: BC's questions all have a median around 4.5, so a raw-scale bar would be nearly full on every row and would tell you nothing. Every bar is one ink colour — nothing here is graded green or red. The hatched bars are not ratings at all: a higher number on either describes a different course, not a better one. 1 of 13 questions were not reported and are left out rather than shown as zero.

MATH 8808 Geometry/Topology IOvr33Chal—Work—
On this class's board4th of 4 instructors Provisional

1 section on record · course itself rated 40 out of 100. See the full board for MATH 8808.

TermSecInstrCourseWork
Fall 2023013340—
All 13 items for MATH 8808

Nothing reported

None of the evaluation questions were reported for these records.

MATH 8845 Topics in Algebra and Number TheoryOvr—Chal—Work—
On this class's boardunrated · 5 instructors on record Provisional

1 section on record · course itself rated — out of 100. See the full board for MATH 8845.

TermSecInstrCourseWork
Spring 202601———
All 13 items for MATH 8845

Nothing reported

None of the evaluation questions were reported for these records.

How to read this pageScores are out of 100 — Boston College's 1–5 agreement scale, ×20, the way these numbers were printed for years. Almost every class scores high on that scale (the median is about 90), so challenge and workload are shown as a rank against every instructor we hold rather than as a score; the raw figure is in the breakdown above. Neither describes quality, and neither is ever marked better or worse anywhere on this site. A dash means the question was not reported, and is never a zero. The position printed against each class is this instructor's place on that class's own board, computed from the same records the board itself is built from.