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...

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...

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 ...

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...

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,...

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...

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...

Years of legal writing — where a misplaced modifier can change the meaning of a contract — gave Tiffany an unusually precise command of grammar. She unpacks rules around subject-verb agreement, comma usage, and parallel structure by showing students how each choice affects clarity, turning grammar f...

Comma splices, dangling modifiers, subject-verb agreement in complex sentences — MaryAnn tackles grammar not as a set of arbitrary rules but as tools that make writing clearer and more persuasive. As a published author, she spots mechanical errors quickly and explains the logic behind each correctio...

Sentence structure follows rules as logical as any equation, and Earnest teaches grammar with that same clarity — breaking down when to use semicolons versus em dashes, how subordinate clauses function, and why parallel structure makes writing stronger. His 1530 SAT score reflects sharp command of w...