Teach Starter vs CK-12 FlexBook 2.0

Teach Starter8.7Visit CK-12 FlexBook 2.08.5Visit

Higher score Teach Starter #2 in Google Workspace Teacher Resources Software 8.7/10 Free plan Free plan✓ 0 of 1 features Visit Teach Starter

vs

CK-12 FlexBook 2.0 #4 in Google Workspace Teacher Resources Software 8.5/10 Free plan Free plan✓ 0 of 1 features Visit CK-12

• Teach Starter fits best

  Pre-K to Grade 7 curriculum-ready materials

• CK-12 FlexBook 2.0 fits best

  Free K–12 science lessons and practice

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Side by side

Feature	Teach Starter 8.7/10 Visit ↗	CK-12 FlexBook 2.0 8.5/10 Visit ↗
At a glance
Editor score	8.7	8.5
Ranking	#2 in Google Workspace Teacher Resources Software	#4 in Google Workspace Teacher Resources Software
Best for	Pre-K to Grade 7 curriculum-ready materials	Free K–12 science lessons and practice
Pricing model	Free plan + paid	Free
Starting price	$6.08/user/mo	Free plan
Free plan	✓	✓
Free trial	—	—
Deployment	Cloud	Cloud
Platforms	Web	Web
Support	Docs	Email, Community, Docs
Built for	Solo, Small business, Mid-market, Enterprise	Small business, Mid-market, Enterprise
Features Teach Starter 0/1 · CK-12 FlexBook 2.0 0/1
Google Classroom integration	Not checked yet	Not checked yet
Specs
Workspace apps	Not checked yet	Not checked yet
Resource types	Not checked yet	Not checked yet
Resource library size	Not checked yet	Not checked yet
Sharing controls	Not checked yet	Not checked yet
Our review
Pros	Covers multiple subjects with curriculum-aligned lessons and unit plans Plus includes editable resources in multiple file formats School Plan adds teacher licences, administration and team management	Customizable FlexBooks let teachers rearrange chapters and add materials. Interactive lessons include videos, simulations, PLIX activities, and practice. Google Classroom and LMS integrations support assignments and grade passback.
Cons	Free downloads are limited to the free-resource collection Free-plan resources are non-editable Materials focus on Pre-K through Grade 7	Its verified subject scope is limited to K–12 science. The platform is delivered through a web browser rather than native apps. LMS connectivity is centered on a defined set of supported integrations.
Our verdict	Teach Starter is a web-based library of curriculum-aligned teaching materials and classroom tools for educators working with Pre-K through Grade 7 students. Its resources span English Language Arts and Reading, mathematics, science, social… Read the review →	CK-12 FlexBook 2.0 is a browser-based platform for students, teachers, parents, and schools seeking free K–12 science curriculum. Teachers can customize digital textbooks, rearrange chapters, add materials, assign lessons, create quizzes,… Read the review →

Strengths and trade-offs

• Teach Starter — where it wins

  • Covers multiple subjects with curriculum-aligned lessons and unit plans
  • Plus includes editable resources in multiple file formats
  • School Plan adds teacher licences, administration and team management

  Where it doesn't

  • Free downloads are limited to the free-resource collection
  • Free-plan resources are non-editable
  • Materials focus on Pre-K through Grade 7

• CK-12 FlexBook 2.0 — where it wins

  • Customizable FlexBooks let teachers rearrange chapters and add materials.
  • Interactive lessons include videos, simulations, PLIX activities, and practice.
  • Google Classroom and LMS integrations support assignments and grade passback.

  Where it doesn't

  • Its verified subject scope is limited to K–12 science.
  • The platform is delivered through a web browser rather than native apps.
  • LMS connectivity is centered on a defined set of supported integrations.

• Teach Starter8.7/10 · Free plan

  A broad library of editable teaching materials, lesson plans and classroom tools for Pre-K to Grade 7.

  Visit Teach StarterFull verdict →
• CK-12 FlexBook 2.08.5/10 · Free plan

  A free K–12 science platform combining editable textbooks, simulations, practice, and assessment tools.

  Visit CK-12Full verdict →