Very ugly. Can't stand to look at her. Hard teacher, tons of homework. Does NOT give partial credit on exams unless you fill out a lengthy form explaining why you deserve it. This class is academic suicide. Worst. Teacher. Ever.

she is probably the most picky teacher I had yet that was so picky on grading, she make home-works and P4C's easy, but boy! be ready for her quizzes and her tests, I highly suggest to memorize a 200 page equations one by one in order to pass her class!

Not understanding. Does not give extensions. Very harsh grader, the grade you get is not changeable. Definitely do not recommend this teacher. Will affect your GPA

Already a couple of weeks in and I am regretting even looking at her name here. The coursework is too insane and her grading is super meticulous. Do not take her, stay away!!

this course has been so tough for me and she is really sweet but she gives tons of homework and its like so exhausting. i go to her to ask like advice about what should i do but honestly it doesnt matter at this point.

very strict

Ms. Dean Leoni makes the class very difficult for no reason. She expects way too much from students. And I do not understand why she has higher than a 3.5 rating from students.

such a difficult teacher!

deann is not a teacher i would recommend if you want a teacher that gives you the benefit of the doubt (not that it's expected) because she is quite LITERALLY the opposite

她不是一个好的数学老师，她会帮助你，但即使她很好，她也会在考试中给你 0 分

Teacher nice sometimes but hard class

way too strict for her ability to teach

I think Mrs. Deann Leoni is a nice friendly teacher but it doesn't matter because she is a very difficult grader and person who is unwilling to negotiate

gives out soo much homework prepare to put 3 hours a day to complete homework assignments and another 10 hours before exams. not just that the tests are difficult but that she always does too much small errors that have nothing to do with conceptual understanding will cost you like putting a negative or forgetting a symbol she does not care

girl does way too much

way TOO much homework!

Extremely strict grader and unwilling to negotiate, even when she makes mistakes in grading. Lectures feel unhelpful because she barely explains concepts, and you're left teaching yourself. Exams are brutal, and even small mistakes cost you heavily. If you care about your GPA, take this class with a different professor if possible.

Avoid if you value fair grading. She takes off excessive points for minor mistakes and refuses to re-evaluate even when errors in grading are pointed out. Her explanations are minimal, and Calc is already tough—having a professor like this makes it a nightmare.

If you want to teach yourself an entire course and still get unfairly penalized, take her class. She barely explains anything in lectures, grades harshly, and does not accept any corrections, even when she's wrong. No curve, no partial credit, and no leniency. This class is pure stress. Take it with someone else if you can!

Absolutely terrible professor. Her grading is beyond strict, and she has no flexibility even when she's the one who makes an error. Doesn't explain concepts well, and when students ask questions, she's either dismissive or vague. If you're considering linear algebra, wait for a different professor unless you want your GPA destroyed.

Easily the worst professor I've had. Grading is absurdly harsh, and she doesn't teach—just writes things down and expects you to figure it out. Doesn't take responsibility for grading mistakes and refuses to listen. Exams are intentionally difficult, and office hours aren't helpful. This class was miserable.

Horrible experience. The grading is so extreme that even small errors cost you significant points. She makes mistakes but refuses to acknowledge them, which is beyond frustrating. Teaching style is ineffective, and you'll end up learning everything from the textbook or YouTube. Your GPA will suffer—take this class with another professor if you can.

Stay away if you value fairness. She barely teaches, then expects perfection on exams. Harsh grading with no room for discussion, even when she's in the wrong. Doesn't curve or give meaningful feedback, and office hours are pointless. Class is already difficult; her class makes it much worse.

Would not recommend. Grading is far too harsh, even for small mistakes. She's unwilling to adjust errors in grading and seems indifferent to students struggling. If you don't already understand calculus you'll be lost because she doesn't explain much. Definitely take a different professor if you can!

This class felt like an uphill battle. She doesn't explain the material well, then expects flawless work. Grading is so strict that even small calculation errors result in huge point deductions. When grading mistakes happen, she won't acknowledge them. Avoid if you care about fairness and learning in a supportive environment.

she is nice but it doesn't even matter because she expects way too much from students like yes she told us the class was going to be hard but the fact that she can and WILL deduct points from correct answers is ridiculous

Toughest grader I've ever had, and not in a good way. Doesn't teach much, makes grading mistakes but refuses to adjust, and has no sympathy for struggling students. The exams are brutal, and there's little opportunity to improve your grade. Wish I had waited for a different professor—my GPA took a serious hit.

One of the worst professors I've had. Expects perfection but doesn't actually teach. Harsh grading with no partial credit, even for small mistakes. When she misgrades, she refuses to reconsider. Exams are unnecessarily difficult, and lectures are just her writing on the board with little explanation. Avoid if you care about your GPA!

Avoid at all costs. She teaches like we're all math majors who already know everything. Her grading is so extreme that one mistake can tank your score. No flexibility, no retakes, and no interest in student success. If you're taking Calc 1, do yourself a favor and find another professor.

Lectures are useless—she just rushes through examples with little explanation. Expects perfection on exams but refuses to acknowledge grading errors. No partial credit, so even if you understand the problem but make a small mistake, you get nearly zero points. GPA killer. Look for another instructor if possible.

Brutally difficult class with no support. She doesn't explain well, expects you to figure it out, then punishes you on exams for tiny mistakes. Grading is unreasonable, and she won't adjust even when she's clearly wrong. Worst Calc 3 professor I've ever had. Save yourself the stress and take someone else.

Worst professor I've had for math. Does not teach, just throws problems on the board and expects you to understand. No study guides, exams are much harder than what's covered in class, and grading is harsh beyond belief. If you make a single mistake, you lose tons of points. She also refuses to acknowledge grading errors.

Her lectures are an endurance test. She speaks in a monotone, rushes through material, and never checks if students are following. Homework problems don't align with what's covered in class, making studying for exams a guessing game. Grading is overly harsh, and there's no extra help available.

Expects students to magically understand advanced concepts without explaining them. If you ask questions, she either brushes them off or makes you feel stupid for asking. The workload is overwhelming, yet there's no support. The exams are nothing like the homework, so good luck preparing. This class made me hate math.

She spends more time pointing out students' mistakes than actually teaching. Rather than guiding us through concepts, she rushes through problems at lightning speed and assumes we get it. Office hours are useless because she seems annoyed when asked for help. If you struggle, she'll just tell you to “review the notes.”

This class is a game of survival. The tests are designed to be trickier than necessary, and she makes no effort to actually teach. She assumes you already know multivariable calculus before stepping in. Even the best students were struggling, and she didn't care. If you want to succeed, you'll have to rely on YouTube and self-study.

Her grading system is absurd. It feels like she's actively looking for ways to take off points. Even if you get the right answer but show your work slightly differently than her method, she'll penalize you. There's no consistency, no fairness, and no willingness to explain her reasoning. It's honestly demoralizing.

This class is just one giant independent study where she hands out tests and disappears.

The lack of engagement makes learning Calc 3 even harder than it already is.

Her grading is so extreme it feels like she enjoys taking points off. Even if you get the right answer, she'll deduct points for tiny formatting details. It's like she's grading an art competition instead of a math class. No partial credit, no leeway, just brutal point deductions for the smallest errors. If you care about your GPA, AVOID!

Every assignment feels like a trap. You can understand the material perfectly and still get a terrible grade because she deducts points for things that don't even matter. Forgot to box your answer? Points gone. Wrote an explanation slightly differently than hers? More points gone. It's exhausting and completely unfair.

I've never had a professor who punishes minor mistakes this badIt's as if she's grading with the intention of making students fail. The grading policy is actually terrible

She grades like a robot programmed to find flaws. Even when you follow the process correctly, if your final answer isn't in the exact form she expects, you lose massive points. No explanations, no appeals, just an unreasonable standard that no one can meet. If you like doing perfect work and still failing, take this class.

The grading is so strict it feels personal. not even about accuracy she finds ways to take off points even when you demonstrate full understanding. I've taken hard math classes before, but nothing like this. The worst part? She refuses to justify her deductions. Just “that's how it is.” Completely unfair.

She treats grading like a punishment, not an evaluation of learning. Even minor missteps are met with devastating score reductions. No chance to clarify, no explanations for deductions, just a slash through your work and a horrible grade. I've never worked so hard in a class only to be graded so unfairly.

Feels like she's actively trying to lower everyone's grades. Even students who are great at math struggle to get decent scores because of how ridiculous her grading is. No curves, no flexibility, no mercy. Even professors in harder subjects aren't this harsh. I genuinely don't understand how she's allowed to keep teaching.

She claims to be “preparing us for higher expectations No room for human error, no adjustments even if the entire class does poorly. It's like she wants us to fail. I've never felt this hopeless in a math class before. Avoid her if you can.

I thought Calculus 3 would be tough, but she makes it unbearable. You can master the concepts and still get a bad grade because of how absurdly strict she is. She nitpicks everything, refuses to give partial credit, and never explains her grading decisions. No other professor I've had has been this unreasonable.

If you enjoy watching your GPA get obliterated over tiny mistakes, take her class! She doesn't care if you understand the material and she only cares about marking every tiny imperfection. Even a misplaced negative sign will tank your grade. The way she grades isn't about learning but rather punishment.

he was friendly during the first week, but that quickly disappeared once we got into the material. Her grading is so harsh that even tiny mistakes result in massive deductions. No partial credit, no flexibility, and no sympathy. The exams are way harder than the homework, and she refuses to acknowledge any grading mistakes.

Sure, she's organized, but that doesn't help when her grading is absolutely ruthless. She takes off points for the smallest details and refuses to even consider grading adjustments, even when she makes mistakes. The tests are so much harder than anything we practice, and she offers no real support. Do not take if you value your GPA.

She explains things well in the first five minutes of class, but after that, it's a disaster. Her grading is unreasonably strict, and she refuses to give partial credit even when the logic is correct. Expect to lose massive points over tiny formatting or sign errors. It feels like she actively wants students to fail.

Shhe responds to emails quickly, which would be nice if her grading wasn't absolutely brutal. Even when she misgrades something, she won't correct it. No matter how much effort you put in, she'll find a way to take points off. Exams are intentionally tricky, and there's no curve. Just take Calc 3 with someone else.

At least she posts assignments on time, but her grading is unrealistically harsh. She nitpicks every little thing, deducts points without reason, and makes the exams way harder than they need to be. If she makes a grading mistake, she won't change it. If you don't need this class with her, don't take it. It's just not worth it.

She seems like a nice person, but her grading is so unfair it doesn't even matter. She expects perfection and gives no partial credit, even when the mistake is minor. If you lose a single point, expect it to be 5 instead. The tests are unnecessarily difficult, and she refuses to acknowledge her own errors. Absolutely terrible experience.

She seemed supportive at first, but once the tests started, that changed. She grades like she's looking for excuses to take points off, no matter how well you understand the material. Even a minor misstep means losing nearly all points. I've never had a professor be this unforgiving. If you want to actually succeed, find another instructor.

I'll give her credit for being punctual, but that's about it. Her grading system is beyond unreasonable. If you get the right answer but don't format it exactly how she wants, expect to lose major points. She refuses to listen to student concerns and acts like any feedback is a personal attack. This class was miserable.

one small mistake and you lose nearly all your points. No partial credit, no retakes, and she refuses to acknowledge grading mistakes. Exams are way harder than homework, so expect to struggle even if you study. Take this class with someone else.

She's very punctual, but that's about the only positive thing I can say. Her grading is absolutely brutal—if you make even a minor mistake, expect to lose a huge amount of points. No flexibility, no curves, and she won't reconsider anything. The tests are way harder than what she teaches. calc 1 is terrible with her i cant even

She explains concepts well occasionally, but that doesn't help refuses to consider any regrades, even when she clearly misgrades something.

She's polite, but that doesn't change the fact that her grading is absolutely awful. You can have the right answer, but if your steps don't match her expectations exactly, she'll still take points off. No room for small mistakes, no partial credit, and no chance for extra help. This is the worst math professor I've ever had.

She was approachable at the start, but that's where the positives end. She is by far the harshest grader I've ever encountered.

her tests are significantly harder than anything we practice. Avoid if possible.

She has a nice demeanor, but her grading

The exams are much harder than what's taught in class, and she doesn't care if students are struggling

Oh my god her exam was so much harder than the exam prep she gave us an exam prep and it had barely any resemblance to the actual exam

she's not helpful when it comes to grades. make one minor slip-up, your grade tanks

Even if you study hard, your grade will not reflect your effort.

评分很难 我觉得这门课很难

She is honestly so out of touch. cares more about pointless rules gets mad if you come in late, acting like it's some huge disruption when literally NO ONE in class cares. It's a lecture, not a test. Same with one-sided notes. it doesn't even matter when we're already teaching ourselves everything anyway

She says the class is difficult which is true not just because of the concepts but because of HER. Ms. Deann here refuses to give out full points/marks it's like she hates giving out 100s

Professor Leoni is the definition of “100 is perfect and no one is perfect” also attendance is basically mandatory

Wish I never took this class

Took her fall quarter and leoni isn't the type of person who wants her students to succeed will preface the class by saying it's a difficult class but it's her that makes it difficult overcomplicating concepts to waste time and lecture

she is nice, but the class is very difficult (unnecessarily)

Her exam is harder than her lecture and homework.

Miss Leoni is nice but I dislike her because she rarely gives full marks on quizzes. She cares so much about conceptual understanding when she can't teach, so it's to your disadvantage when you're doing a test and can't memorize or write down an entire proof, every single part numbered fully annotated. Expect to get points off for trivial mistakes

studied the exam review for a few hours just for most of it to not show up on the actual exam. a lot of us complained about this very issue and jesus she grades harshly no wiggle room whatsoever

even with the smartest people in the class she will mark points off and allow you to negotiate just to stay firm on her decision when she's an unreasonably strict grader. students will spend hours studying just to be torn apart by her grading. even though she is nice in class, it is truly the worst. recommend taking with professor eldridge instead

Don't take this class. Worst teacher I've ever had in my 15 years of schooling

Withdrew from this class. Wait until another professor teaches the class. Deann is very very very very very nit picky about grading to an unreasonable degree. She WILL act like a sweet friendly teacher when you start the class, but she is ruthless when it comes to grading and does not want the best for her students.

Very difficult teacher both literally and metaphorically.

The teacher expects absolute perfection even though her grading criteria isn't clear. She's stupidly strict and expects you to have textbook level explanations and proofs otherwise expect to get less than half credit for a problem even if you dif everything correctly

You will get a much higher grade if you take the class with a different professor

Make sure to master every single concept if you want at least half credit. This class is a joke.

I think class is difficult. Miss Leoni is hard to understand as international student and I wouldn't take again

Leoni's course design left no room for honest errors or genuine confusion. The professor seemed more interested in penalizing students than helping them grasp difficult concepts. That unforgiving environment made the class feel stressful rather than academically challenging. earning a good grade was more about guessing what Leoni wanted

Overly harsh grading is easily my biggest gripe. Even when I knew the material and felt confident about my answers, Leoni would still deduct points. I'd compare notes, textbook references only to find the feedback didn't justify the loss of marks. Sometimes, it felt like the professor was actively looking for any reason to mark you down.

dont even know what to say or where to start. shes the type of teacher to hold grudges, will make it so that all odds are against you, find excuses to take off points. puts in more effort and justification in deducting pts than teaching. no amount of my effort seems to pay off its exhausting. shes insufferable will NOT hesitate to give bad grades

Save yourself. Take the class if you want to put in 3+ hours of studying a day just to get a 70 on the quizzes at most. Ms. Leoni does not believe in giving 100s and that speaks volumes

She is a very difficult teacher and you will put in massive amounts of effort to satisfy her. Quizzes and exams aren't difficult, but she sure is, and that's what you should worry most about

She has very high expecsays this during the beginning of the quarter

My rule of thumb is if you complete all of the homework and activities you should get at least a 75 in the class, but Ms. Leoni's class has been an exception. Ms. Leoni's class has been a major headache and she is a very difficult person doesn't let you get away with a minor mistake (will be punished with points taken off).

Was easily the most frustrating experience I've ever had. She holds her class to an almost impossible standard, making exams and assignments needlessly complicated. The harsh grading further adds insult to injury. she's more focused on marking every tiny mistake than on actually teaching the material

Such a pain taking the class with a teacher who will make your life harder than it needs to be.

I went to almost every single office hour, and Ms. Leoni is still so harsh on with grading. Even when I get an answer correct (checked with answer key) with a sufficient amount of explanation, she still finds a way to take off points, and it's just so tiring because I spend so much time and effort studying the material for it to not pay off.

Nice, but too strict on tests, quizzes, and exams

Activity grades very little feedback from the teacher and lack of explanation for points off

She warns you that many people retake this course but it makes sense as she is one of the people teaching it. If you ever reach out to her with questions for the online homework, just be warned that she will not listen. She expects to be right 100% of the time and will not actually look at your concerns, instead make assumptions and be upset at you

Deann will take off unnecessary points for her own inability to understand your work despite the answer being right.

says she encourages questions but when it comes to any criticisms or questions regarding markings on paper she doesn't take it lightly. during office hours, she is often confused when confronted with problems and will be hypocritical about it. also a very narrow-minded grader and will NOT be flexible even if you talk to her personally after class

she feigns passion encouraging questions and participation, but is unforgiving when a student actually expresses concerns with specific problems and criticisms. she is one of those teachers that will take off points to save time, instead of asking for clarification or just simply spending an extra minute to examine a student's work

Would not take again

Awful teacher! Just talked repeatedly about how people take this class more than once and would speed through so many different topics, and then expect people to understand. As well as, when asked in class questions, never answers them, except talks about something entirely different.

Professor Deann is extremely nitpicky and inflexible. Even with correct answers and clear work shown, she deducts points for minor, almost arbitrary reasons. When questioned respectfully, she refuses to reconsider. Not supportive or student-centered—would not recommend.

The class itself or I should day subject I sent hard me and many others feel like Calc 3/Calc 4 was harder, but Deann is the difficult person. She is nice sure but when it comes to grading she's unforgiving and wrongfully strict

Tests don't accurately resemble the homework, and professor deann leoni isn't very lenient when it comes to grading. she has a very strict guideline for what qualifies as a correct answer when even if you get the correct answer she has additional requirements for full credit which I believe is very unreasonable