11. PBS LearningMedia
PBS and WGBH
A free PreK-12 library of classroom videos, interactives, lesson plans and games contributed by public media stations and partners. Content is tagged to state and national standards, and you can search by subject, grade and standard. It is the first place to look when you want a finished lesson built around media.
Described as free for educators and students.
Watch for A free account is needed for saving resources, building lessons in the Lesson Builder and sharing to Google Classroom.
Visit PBS LearningMedia ↗ Facts read on the maker’s page.
A literacy site from the National Council of Teachers of English with lesson plans, printouts, student interactives and teaching comics for kindergarten through grade 12. Resources are grouped by grade band, and the site's about page describes its materials as free.
The about page describes the materials as free.
Watch for Literacy and English only. It will not help you plan math, science or social studies.
Visit ReadWriteThink ↗ Facts read on the maker’s page.
A digital library of open educational resources, run by the nonprofit ISKME, with K-12 lesson plans, worksheets and activities as well as full courses. The site says it is free for everyone. Teachers can tag, rate and review materials, and build their own with its Open Author tool.
The site states that it is free for everyone.
Watch for Licenses differ from item to item, so check each resource's terms before you change or share it.
Visit OER Commons ↗ Facts read on the maker’s page.
44. Khan Academy for teachers
Khan Academy
A free platform with AI-supported tools for planning, teaching and adjusting lessons. Teachers can assign standards-aligned practice in math, reading, writing and science and see which students are finishing work and where they are stuck. The site says it has no paywalls or ads.
The page says the platform is still free, with no paywalls or ads.
Watch for The planning tools work with Khan Academy's own content rather than your own curriculum documents.
Visit Khan Academy for teachers ↗
A free site of lesson plans and other teacher resources, run by the American Federation of Teachers, with a community of more than two million members. Resource types include lesson plans, worksheets, presentations, assessments and project-based learning, across subjects from math and science to physical education and world languages.
The site describes its lesson plans and resources as free.
Watch for Members contribute much of the material, so check each lesson against your standards; the page offers log in and sign up, and does not say what browsing without an account allows.
Visit Share My Lesson ↗
A collaborative planning tool for writing unit and lesson plans, tracking standards and sharing plans with colleagues. Plans can be reused in later years and teams can co-plan in one shared planbook. AI help is built in. The teacher plan, called CP Basic, is advertised as free.
The free part: The teacher plan, CP Basic, is advertised as free. Schools and districts request a demo, and admins can start a 30-day free trial.
No paid prices are listed on the page we read.
Watch for The page does not say what CP Basic leaves out or what school plans cost, so check before you build a whole team's planning on it.
Visit Common Planner ↗
77. PlanbookEdu
PlanbookEdu
An online lesson planner that works on a computer, tablet or phone. The free plan covers unlimited weekly plans, A/B day and rotation schedules, and basic editing. Premium adds sharing, collaboration, file attachments, standards tagging and Word and PDF export.
The free part: Write and print lesson plans, with unlimited weekly plans and A/B day and rotation schedules.
Premium is $30 a year and does not renew automatically; schools buying several accounts pay less per teacher, starting at $27 (as of 2026-10-27). The main site mentions a 14-day Premium trial with no credit card.
Watch for Sharing, collaboration and standards tagging are Premium features, so the free plan is a private plan book.
Visit PlanbookEdu ↗ Facts read on the maker’s page.
88. MagicSchool
MagicSchool
An AI platform for K-12 with more than 80 teacher tools, including a lesson plan generator, rubric generator and quiz maker. Individual teachers can use a free plan. The company says it complies with FERPA and COPPA and does not use teacher or student data to train its AI; these are its own statements.
The free part: A free plan for individual teachers with the 80+ teacher tools. It leaves out unlimited generations, output history, unlimited editing of AI output and the 50+ student tools.
Plus is $12.99 a month, or $99.96 a year billed annually (as of 2026-10-27). District pricing is by quote.
Watch for The free plan does not give unlimited generations, and the page does not state the cap, so a heavy week of planning may hit it.
Visit MagicSchool ↗ Facts read on the maker’s page.
99. Teachers Pay Teachers
TPT
A marketplace of PreK-12 teaching materials made by other educators, including lesson plans and unit bundles. Sellers set their own prices, and the site has a Free price filter for finding no-cost items.
Prices are set by individual sellers; the home page we read showed listings from about $1 to $9 (as of 2026-10-27).
Watch for A TPT account is needed to download, even free items, and paid items are priced by each seller.
Visit Teachers Pay Teachers ↗ Facts read on the maker’s page.