A teacher cover letter is three short paragraphs. Open with your state license plus the exact grade and subject you teach. Prove one classroom outcome with a number. Close by tying yourself to this specific school. Principals read for fit and evidence, not for adjectives.
A hiring principal scans the first line for one thing: are you certified to teach what the posting needs, at the level it needs. Give it to them immediately. 'I hold a California Single Subject Credential in Mathematics and have taught Grade 8 Algebra I for six years in a Title I district' tells the committee in one sentence that you clear the legal bar and have the relevant grade band. Compare that to 'I am writing to express my strong interest in the teaching position at your school,' which says nothing and burns the most valuable line in the letter.
Name the exact posting. If the listing is for 'Middle School Science, Grades 6 to 8,' say so. Districts post many openings at once and route applications by req number, so 'your posting for the Grade 7 Life Science position (req 2041)' helps a human and any applicant tracking system file you correctly.
If you are a new teacher, the same rule holds, you just lead with the credential and the student-teaching placement. 'I hold a freshly issued Texas EC-6 Core Subjects certification and completed my clinical teaching in a dual-language Grade 3 classroom' is a strong opener even with zero years of paid experience. The credential is the credential.
The middle paragraph is where most teacher cover letters go soft. They list duties: planned lessons, differentiated instruction, maintained a positive classroom environment. Every applicant writes that. Instead, pick one outcome where students measurably did better because of you, and quote the number. 'Over two academic years I lifted Grade 8 Algebra I proficiency from 54 percent to 71 percent across four sections (128 students), while keeping the gap between my ELL students and the cohort under five points.' That is a sentence a principal can repeat to a committee.
You do not have test scores for everything, and you do not need them. Other outcomes that carry weight: AP or IB pass rates, district benchmark growth, attendance or behavior referrals reduced, a literacy intervention that moved a reading level, college acceptance rates for a senior cohort, a club or program you grew from nothing. The structure is always the same: what changed, by how much, over what period, for how many students.
Add one line of context so the number means something. A jump from 54 to 71 percent reads differently in a Title I school with 38 percent English learners than in a selective magnet, and saying so makes you sound like a teacher who knows their own data rather than someone who copied a metric off a template.
The third paragraph answers why this school. Generic enthusiasm reads as a mass mailing. Specific reference reads as a candidate who did ten minutes of homework. Pull one real thing from the school: an IB program, a project-based learning model, a one-to-one device rollout, a dual-language strand, a recent state recognition, the mission statement on the about page. Then connect your practice to it. 'Your move to a project-based science curriculum matches how I already run my classroom; my Grade 7 students spend the third quarter on a watershed study that ends in a presentation to the city council.'
Close with a clear, low-friction ask and your signature. 'I would welcome the chance to walk a hiring committee through my Algebra data and my approach to ELL support. I am available for a demo lesson any morning this month.' A demo-lesson offer is the strongest closer in education hiring because it moves you toward the part of the process where teachers win. End with your name and your credential line again, no ornate signature block needed for a digital application.
Keep it to one page, three paragraphs, 250 to 300 words, in the same conservative font as your resume. Address a real person where you can: principals and assistant principals are usually named on the district site or LinkedIn. 'Dear Principal Reyes' beats 'Dear Hiring Committee,' which beats 'To Whom It May Concern.' Match the letter to the resume so the credential, dates, and school names line up exactly; a committee will notice if they do not.
The mistakes that sink teacher cover letters: restating the resume line by line, listing every workshop you have ever attended, leaning on words like passionate and dedicated instead of evidence, forgetting to name the grade and subject, and sending the identical letter to every district with the school name swapped. Read your draft and cut any sentence a thousand other applicants could have written verbatim. What stays should be true only of you.
One page, three paragraphs, 250 to 300 words. Principals review stacks of applications, so the credential, one classroom outcome, and the fit-to-school close all need to land fast. Anything longer gets skimmed.
Your state credential plus the exact grade and subject, tied to the specific posting. For example: 'I hold a Florida Professional Certificate in Elementary Education (K-6) and am applying for your Grade 4 position (req 318).' It proves you clear the legal bar and match the level in one sentence.
Lead with the credential and your student-teaching placement instead of years on the job. Name the grade and subject of your clinical placement, quote one outcome from that classroom (a benchmark gain, a unit you designed, a student you moved up a reading level), and close with a demo-lesson offer. New teachers win on credential clarity and evidence of impact, not tenure.
One measurable result: a proficiency rate change, AP or IB pass rate, district benchmark growth, attendance or behavior improvement, a literacy intervention that moved reading levels, or a program you built. Always give the number, the time period, and the student count, then add one line of context so it is interpretable.
Yes, when you can find the name. Principals and assistant principals are usually listed on the school or district website or on LinkedIn. 'Dear Principal Okafor' beats a generic salutation. If you genuinely cannot find a name, 'Dear Hiring Committee' is acceptable; avoid 'To Whom It May Concern.'
Reuse the structure, not the third paragraph. The credential opener and the outcome paragraph stay largely the same across applications. The fit-to-school close must change every time, because a generic close is the fastest way to signal a mass mailing to a committee that reads dozens of letters.
The resume the letter points to: credentials, grade, subject, and quantified student outcomes.
Clean, ATS-safe structures you can drop your three teaching paragraphs into.
The three-paragraph method behind every strong cover letter, teaching or not.
Check that credentials and outcomes parse cleanly before you apply.
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