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Kate
Kate treats grammar as a logical system rather than a list of arbitrary rules, breaking down sentence structure the way an engineer might break down a schematic. She's particularly sharp on the mechanics that trip up student writers most often: comma splices, subject-verb agreement in complex senten...
Massachusetts Institute of Technology
Masters, Environmental Engineering
Massachusetts Institute of Technology
Bachelors
Certified Tutor
9+ years
Jai
Scoring a 1590 on the SAT meant Jai couldn't afford grammar mistakes on the Writing section, so he internalized the rules governing subject-verb agreement, parallelism, modifier placement, and comma usage at a granular level. He breaks grammar down into a decision tree: a small set of patterns that ...
Stanford University
Bachelors in Electrical Engineering and Computer Science
Certified Tutor
As one of the first freshmen accepted into Penn's certified writing tutor program, Jessica spent years giving detailed feedback on sentence structure, punctuation, and usage. She unpacks grammar rules — subject-verb agreement, comma splices, dangling modifiers — by showing students how each rule sha...
Nova Southeastern University
PHD, Medicine
University of Pennsylvania
Bachelors, History
University of Pennsylvania
undergraduate
Certified Tutor
Erika
Comma splices, dangling modifiers, subject-verb agreement — Erika zeroes in on the specific grammar patterns a student keeps tripping over rather than rehashing rules they already know. Her experience editing college essays and teaching SAT Writing gives her a sharp eye for the errors that cost poin...
Harvard University
Master of Public Policy, Public Policy
Certified Tutor
6+ years
Jeffrey
Clear technical writing demands precise grammar, and Jeffrey has spent years refining that skill through research papers, grant applications, and academic publications in his engineering PhD program. He digs into the mechanics that trip students up most — subject-verb agreement in complex sentences,...
University of Notre Dame
Bachelor of Science
Rice University
Doctor of Philosophy, Mechanical Engineering
Certified Tutor
6+ years
Rhea
Scoring a 1550 SAT and 36 ACT required Rhea to master the grammar rules that standardized tests love to exploit — comma splices, subject-verb agreement across long modifiers, and parallel structure in complex sentences. She breaks these patterns down into clear, repeatable rules so students can spot...
University of Chicago
Bachelor of Science, Biology, General
Certified Tutor
6+ years
Pinelopi
Comma splices, subject-verb agreement, dangling modifiers — grammar rules are easier to remember when students understand the logic behind them instead of just memorizing corrections. Pinelopi breaks down sentence structure visually, showing how clauses connect and where punctuation belongs, so stud...
Duke University
Bachelor in Arts in Psychology
Certified Tutor
Matthew
Songwriting taught Matthew something unexpected about grammar — when you're fitting lyrics to a melody, every comma, every clause break, every pronoun reference has to land with absolute precision or the meaning falls apart. That ear for how language is structured carries over from his music career ...
Stanford University
Bachelors in Human Biology (concentration in Bioinformatics and Stem Cell Science)
Certified Tutor
Tony
Tony sharpened his grammar instincts across two very different arenas: coaching students through SAT Writing and Language questions and tutoring Mandarin Chinese, where explaining English grammar rules becomes essential for comparison. He digs into the logic behind comma usage, subject-verb agreemen...
Yale University
Bachelor of Science in Biology
Certified Tutor
6+ years
Samuel
Running an SAT prep class in high school meant Samuel had to teach the Writing and Language section's trickiest grammar concepts — parallel structure, modifier placement, comma rules — to classmates who'd never thought about why sentences are built a certain way. His applied math training at Caltech...
California Institute of Technology
Bachelor of Science, Applied Mathematics
Top 20 English Subjects
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Zachary
Trigonometry Tutor • +35 Subjects
I am passionate about teaching and tutoring and I thoroughly enjoy helping students gain an understanding and a drive for their studies. I have a long history of working with students of all grade levels and abilities (elementary school through college), and I have a good understanding of strategies to excel in both general academics and standardized tests.
MaryAnn
Calculus Tutor • +21 Subjects
I am a published author who has enjoyed “coaching” our daughter, as she navigated through high school, college and graduate school. I mentor college juniors who are seeking careers in financial services, and I serve as a peer resource to professionals who are transitioning from private industry to the nonprofit sector. Hobbies: reading, cooking, writing, books, music, art, travel
Sharon
Pre-Algebra Tutor • +29 Subjects
I am a graduate of the University of Chicago, and I will be starting a graduate program at Columbia in August. I am about to complete a year of service with City Year, an education non-profit that places young adults into under-served schools. As a City Year member, I worked full-time in the classroom with middle-school students who were in approximately the 10th percentile for math (meaning they score lower than 90% of students). One-fourth of those students were able to grow around 15 percentile points by the end of the year! Hobbies: reading, cooking, gardening, music, art, nature, books, writing
Charles
AP Calculus AB Tutor • +25 Subjects
I am a junior Mechanical Engineering major at Yale, and I hope to become a Naval Aviator after college. I am also a varsity sailor, and enjoy playing music with friends when I can get some free time. I have been tutoring my fellow students throughout my entire academic career, and I would best describe my tutoring style as one that adapts to each students' needs. For example, I have always tried to frame questions in a different way so that the student can better understand the question. Some students need visual representations of numbers and systems to understand them, and others benefit more by understanding the concepts behind each formula. I prefer to tutor in math and physics, and especially with real world application problems. I hope to help students improve their standardized test scores and their understanding of the math and sciences so that they can achieve their academic goals! Hobbies: art, books, running, reading, music, writing
Annie
Pre-Algebra Tutor • +28 Subjects
I am currently a second year medical student. I was a Physiological Sciences major at UCLA (class of 2015), and pursued research during my gap year between undergrad and medical school.
Tiffany
Pre-Algebra Tutor • +56 Subjects
I am available to tutor a broad range of subjects, I am passionate about test preparation, Accountancy, and Algebra.
Earnest
Pre-Algebra Tutor • +26 Subjects
I am comfortable with either setting. I'm confident that I can help you (or your student) achieve to the best of their ability, so please don't hesitate to get in touch!
Sami
Pre-Algebra Tutor • +19 Subjects
I am a Duke University graduate in Economics and Computer Science. I am currently pursuing an MBA degree at the Yale School of Management. I have worked in the financial field, both at a management consulting firm and a fortune 500 company. My hobbies include playing and coaching soccer. Hobbies: reading, writing, art, books, music
Quinn
Calculus Tutor • +17 Subjects
I am willing to address any issue with an open mind and I try to develop strategies that play to a student's strengths. I would like to think I am very approachable and personable, and I have had very positive experiences with many students in the past using this philosophy. Outside of academics, I love playing basketball and watching sports, as well as chilling with friends, listening to music, and keeping up with politics and current affairs.
Samantha
Pre-Algebra Tutor • +38 Subjects
I'm a first-year medical student and recent graduate from Duke University, where I studied Global Health Determinants, Behaviors, and Interventions. From running a piano program at a nonprofit children's theatre to private tutoring in math, science, and standardized test prep, I enjoy helping my students become confident and self-sufficient learners! Hobbies: photography, travel, reading, music, writing, running, art, books, traveling
Top 20 Subjects
Frequently Asked Questions
Students most commonly struggle with subject-verb agreement, especially with compound subjects or collective nouns; proper comma usage in complex sentences; and distinguishing between commonly confused words like "its/it's" or "their/there/they're." Beyond mechanics, many students find it difficult to understand how grammar rules connect to sentence clarity and style—they memorize rules without seeing how they improve their writing. A tutor can help you identify which specific areas are holding back your writing and build targeted strategies to master them.
Grammar covers the technical rules of language—subject-verb agreement, punctuation, verb tenses—while style and voice involve word choice, sentence variety, and tone to create impact and personality in your writing. You can have grammatically correct sentences that are boring or unclear; conversely, understanding grammar rules gives you the foundation to break them intentionally for stylistic effect. A grammar tutor helps you master the rules first, then teaches you how to use that knowledge strategically to develop your unique voice and make your writing more engaging.
The key is understanding independent and dependent clauses—knowing when you have a complete thought versus when you need additional information. Common mistakes happen when students either connect independent clauses with a comma alone (comma splice) or break a complete thought into pieces (fragment). Tutoring focuses on teaching you to recognize clause boundaries, then practice combining sentences strategically using conjunctions, semicolons, or subordination. Once you can identify these patterns, you'll catch these errors in your own writing and develop more sophisticated, varied sentence structures.
Rather than just correcting errors, a grammar tutor walks you through why a mistake happened—whether it's a misunderstanding of the rule, careless proofreading, or confusion about a specific concept. They work with your own writing samples to show you patterns in your errors, so you learn to catch similar mistakes across all your work. This personalized feedback on your real essays is far more effective than generic grammar exercises, because you're learning rules in the context of your own voice and writing goals.
Tense shifts usually happen when you're focused on content and lose track of your timeline—especially common in narratives where you slip between past and present, or in essays where you mix past events with present analysis. The fix involves understanding why you chose a tense in the first place: past tense for historical events, present tense for analysis or current facts, and present perfect for events that connect past to present. A tutor helps you develop a proofreading strategy specifically for tense consistency, teaching you to identify your intended timeline first, then scan your draft with that timeline in mind.
Each punctuation mark serves a specific purpose: commas separate items or clauses and add pauses; semicolons join related independent clauses; colons introduce lists or explanations; and dashes create emphasis or insert additional information. Rather than memorizing rigid rules, understanding the *function* of each mark helps you use them correctly. Tutoring teaches you to think about what you're trying to do in a sentence—are you listing items, connecting related ideas, or adding emphasis?—and choose the punctuation that does that job. This approach makes punctuation feel logical rather than arbitrary.
Modifiers are words or phrases that describe other words, but they only work if they're clearly attached to what they're modifying. A misplaced modifier is in the wrong location ("I saw the deer running through the forest with binoculars"—who has the binoculars?), while a dangling modifier has no clear word to modify at all ("Running late, my coffee spilled everywhere"—did the coffee run late?). These errors confuse readers and can accidentally change your meaning. A tutor teaches you to identify what word you're trying to modify, then place the modifier right next to it, plus how to proofread your drafts specifically for these sneaky errors.
If you've mastered basic grammar, tutoring shifts focus to advanced topics like parallel structure for emphasis, subordination to show relationships between ideas, and strategic use of active versus passive voice. You'll learn how professional writers use grammar intentionally—varying sentence length for rhythm, using fragments for effect, or choosing specific verb forms to control tone. This level of grammar work directly improves your essays, arguments, and overall writing sophistication, helping you move from technically correct writing to compelling, nuanced prose.
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