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 · Chemistry · Fall 2021 – Spring 2026

Marc Snapper

Chemistry · 13 evaluation records across 5 classes

On each class's board
CHEM 223119th of 19 instructorsCHEM 55441st of 2 instructorsCHEM 223219th of 28 instructors ProvisionalCHEM 22416th of 10 instructors ProvisionalCHEM 66117th of 10 instructors Provisional
What the overall is made of
80BC evaluations13 records · weight ×1.0 · Fall 2021 – Spring 2026
68RateMyProfessors17 ratings · weight ×2.0 · 71% 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”13 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 84 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
92ndMore work than 92% of BC instructorsranked against every one we hold
74BC — “Workload”13 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: 17 ratings, 71% would take again, difficulty 84 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 13 records
The Professor4 items
Clearly Explains MaterialThe instructor was effective at creating an understanding of difficult subject matter.
8519th pctl
Available Outside of ClassThe instructor was available for help outside of class.
9037th pctl
Brings Out Your Best WorkThe instructor motivated me to do my best work.
8728th pctl
Sparked My InterestThe course stimulated my interest in the subject matter.
8931st pctl
The Course3 items
Well-Organized CourseThe course was well organized.
8320th pctl
Clear Learning GoalsThe learning objectives for the course were clear.
8418th pctl
Useful Beyond the CourseWhat I learned is applicable beyond this course.
8623rd pctl
Assignments & Feedback3 items
Assignments Help You LearnAssignments and exams contributed to my learning.
8634th pctl
Gives Feedback PromptlyI received feedback on my work in a timely manner.
9261st pctl
Meaningful FeedbackThe feedback I received on my work was meaningful.
8943rd 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.
7492nd pctl
Intellectually ChallengingThe course was intellectually challenging.
9490th pctl
Attendance MattersAttending class was necessary to do well in this course.
8950th 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

5 classes · 13 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.

CHEM 2231 Organic Chemistry IOvr68Chal91stWork95th
On this class's board19th of 19 instructors

5 sections on record · course itself rated 60 out of 100. See the full board for CHEM 2231.

TermSecInstrCourseWork
Fall 2025137163100
Fall 202413625680
Fall 2023136958—
Fall 2022126757100
Fall 202103716580
All 13 items for CHEM 2231
The Professor4 items
Clearly Explains MaterialThe instructor was effective at creating an understanding of difficult subject matter.
742nd pctl
Available Outside of ClassThe instructor was available for help outside of class.
8920th pctl
Brings Out Your Best WorkThe instructor motivated me to do my best work.
816th pctl
Sparked My InterestThe course stimulated my interest in the subject matter.
847th pctl
The Course3 items
Well-Organized CourseThe course was well organized.
777th pctl
Clear Learning GoalsThe learning objectives for the course were clear.
809th pctl
Useful Beyond the CourseWhat I learned is applicable beyond this course.
762nd pctl
Assignments & Feedback3 items
Assignments Help You LearnAssignments and exams contributed to my learning.
808th pctl
Gives Feedback PromptlyI received feedback on my work in a timely manner.
9572nd pctl
Meaningful FeedbackThe feedback I received on my work was meaningful.
8315th 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.
9095th pctl
Intellectually ChallengingThe course was intellectually challenging.
9891st pctl
Attendance MattersAttending class was necessary to do well in this course.
8625th 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.

CHEM 5544 Modern Methods in Organic Synthesis IIOvr92Chal64thWork30th
On this class's board1st of 2 instructors

4 sections on record · course itself rated 87 out of 100. See the full board for CHEM 5544.

TermSecInstrCourseWork
Spring 2026019085—
Spring 202501908540
Spring 202401999560
Spring 202201908340
All 13 items for CHEM 5544
The Professor4 items
Clearly Explains MaterialThe instructor was effective at creating an understanding of difficult subject matter.
9562nd pctl
Available Outside of ClassThe instructor was available for help outside of class.
9136th pctl
Brings Out Your Best WorkThe instructor motivated me to do my best work.
9239th pctl
Sparked My InterestThe course stimulated my interest in the subject matter.
9551st pctl
The Course3 items
Well-Organized CourseThe course was well organized.
8727th pctl
Clear Learning GoalsThe learning objectives for the course were clear.
8519th pctl
Useful Beyond the CourseWhat I learned is applicable beyond this course.
9463rd pctl
Assignments & Feedback3 items
Assignments Help You LearnAssignments and exams contributed to my learning.
9149th pctl
Gives Feedback PromptlyI received feedback on my work in a timely manner.
8937th pctl
Meaningful FeedbackThe feedback I received on my work was meaningful.
9253rd 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.
4730th pctl
Intellectually ChallengingThe course was intellectually challenging.
9364th pctl
Attendance MattersAttending class was necessary to do well in this course.
9250th 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.

CHEM 2232 Organic Chemistry IIOvr81Chal90thWork100th
On this class's board19th of 28 instructors Provisional

2 sections on record · course itself rated 70 out of 100. See the full board for CHEM 2232.

TermSecInstrCourseWork
Spring 2026138373100
Spring 2023127866100
All 13 items for CHEM 2232
The Professor4 items
Clearly Explains MaterialThe instructor was effective at creating an understanding of difficult subject matter.
8411th pctl
Available Outside of ClassThe instructor was available for help outside of class.
9343rd pctl
Brings Out Your Best WorkThe instructor motivated me to do my best work.
8926th pctl
Sparked My InterestThe course stimulated my interest in the subject matter.
8920th pctl
The Course3 items
Well-Organized CourseThe course was well organized.
8730th pctl
Clear Learning GoalsThe learning objectives for the course were clear.
8621st pctl
Useful Beyond the CourseWhat I learned is applicable beyond this course.
8512th pctl
Assignments & Feedback3 items
Assignments Help You LearnAssignments and exams contributed to my learning.
8621st pctl
Gives Feedback PromptlyI received feedback on my work in a timely manner.
9889th pctl
Meaningful FeedbackThe feedback I received on my work was meaningful.
9467th 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.
9890th pctl
Attendance MattersAttending class was necessary to do well in this course.
9038th 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.

CHEM 2241 Honors Organic Chemistry IOvr84Chal—Work—
On this class's board6th of 10 instructors Provisional

1 section on record · course itself rated 90 out of 100. See the full board for CHEM 2241.

TermSecInstrCourseWork
Fall 2023018490—
All 13 items for CHEM 2241

Nothing reported

None of the evaluation questions were reported for these records.

CHEM 6611 Scientific Communication in ChemistryOvr84Chal9thWork25th
On this class's board7th of 10 instructors Provisional

1 section on record · course itself rated 80 out of 100. See the full board for CHEM 6611.

TermSecInstrCourseWork
Spring 202501848040
All 13 items for CHEM 6611
The Professor4 items
Clearly Explains MaterialThe instructor was effective at creating an understanding of difficult subject matter.
8718th pctl
Available Outside of ClassThe instructor was available for help outside of class.
8716th pctl
Brings Out Your Best WorkThe instructor motivated me to do my best work.
9240th pctl
Sparked My InterestThe course stimulated my interest in the subject matter.
8919th pctl
The Course3 items
Well-Organized CourseThe course was well organized.
8520th pctl
Clear Learning GoalsThe learning objectives for the course were clear.
8937th pctl
Useful Beyond the CourseWhat I learned is applicable beyond this course.
9033rd pctl
Assignments & Feedback3 items
Assignments Help You LearnAssignments and exams contributed to my learning.
9258th pctl
Gives Feedback PromptlyI received feedback on my work in a timely manner.
8626th pctl
Meaningful FeedbackThe feedback I received on my work was meaningful.
8935th 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.
4025th pctl
Intellectually ChallengingThe course was intellectually challenging.
819th pctl
Attendance MattersAttending class was necessary to do well in this course.
8729th 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.

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.