Improve Your Grades with Acellus Tutoring

Find and fill the holes in your student's knowledge to help them succeed at school.

Choose from numerous courses in grades K-12

How Acellus Tutoring Works


Select a Concept to Study

Students receive 24/7 access to complete courses that cover the concepts being taught at school. Students can jump to any lesson to get help with a particular concept.


Learn from America's Greatest Teachers

Each concept is taught through video-based lessons featuring some of the greatest teachers in America. These instructors have expertise in explaining "hard to grasp" concepts and bring the subject material to life.

Watch Sample Lessons

Practice with Interactive Problems

After watching a short video lesson, students practice each concept with interactive problems.


Identify Holes in Your Knowledge

Acellus uses special problems to identify where a student has a hole in their background knowledge that is making it hard for them to learn a particular concept. This special type of a problem is called a "Swiss Cheese Problem" because it helps us find holes in a student's understanding.

Video: Swiss Cheese Problems

Receive Personalized Instruction

Using the data gathered about the holes in a student’s understanding, Acellus provides custom personalized instruction to fill the gaps.

Watch Example Help Video

Prepare for Success at School!

When students fill the holes in their understanding, they begin to develop a solid learning foundation that enables them to succeed at school and in life.

Read Success Stories

A Few Reasons Why Parents Love Acellus

Self-paced Learning
Students can work independently and receive personalized instruction to help them master each concept.

Live Monitoring
Watch your student's progress real-time from any mobile device or computer.

Automatic Recordkeeping
Acellus automatically compiles scores, progress, and hours worked into printable reports.

What Parents Are Saying About Acellus

Read the stories below to see how Acellus transforms learning for students.

About Acellus

Acellus is a computer-based learning system that has changed online education as we know it today. Acellus is the only online learning system that utilizes I2 (Intelligent Interaction), which technology enables it to cater the educational content to the individual skill set of each student through customized, personal instruction.

Acellus is the fastest growing learning system in America. The program is used by over one million students at over 2,000 schools in every U.S. state and around the world.

MISSION ACELLUS: Watch the Video
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