Free, fun, and effective
math software for the classroom.

Fully Curriculum-Aligned K-10 Assessments

Differentiate your math class with consistent quality assessments that meet the pedagogical standards required by school boards.

Explore our content

District-Stamped Classroom Fun

Confidently engage your students with the excitement of popular game-based learning, fortified by the learning science that school boards trust.

Learn more on how we engage students

Goodbye Empty Dashboards

Rely on classroom dashboards that tell the full story with unmatched assignment completion rates and a vibrant view of your students’ progress.

Explore our features

Popular ClassOS Features

Knowledgehook GameShow logo
Group based

Run class-wide
interactive activities

Knowledgehook Missions logo

Assign self-paced learning at home or in class

Learn more

No Extra Cost to Teachers

Knowledgehook is a free to use tool for teachers

Create your free account3 Teachers smile holding up Knowledgehook on their phones
Teacher looking at desktop computer with Knowledgehook support documents open

Professional Learning that Understands Your Classroom

Transform how you teach with Classroom Connected Professional Learning. ClassOS Pro is designed around your unique classroom challenges.

Explore ClassOS Pro
Teacher looking at desktop computer with Knowledgehook support documents open
Knowledgehook After School logo

Uniting Classroom Insights with Home Tutoring

Introduce parents to a tutoring solution that aligns with your teaching, ensuring students receive consistent, affordable, and quality support.

Learn more about After School
Circle of people surrounding a student and teacher high-fiving. Showing the many people who have an impact in a student’s learning journey.