Cingletree Learning, LLC

Empowering the Connected Classroom

Cingletree Learning is dedicated to building and publishing state-of-the-art learning applications and teacher tools. Our products are designed to meet the needs of the connected classroom and individual learners worldwide.

About Us

Cingletree Learning, LLC is a privately held company located in Laguna Niguel, California. The company was founded in 2009 to assume operations from, a collaboration between the late Marvin VanHorne and his son Bret. Cingletree Learning continues to operate the online educational website English Grammar 101, which Marvin and Bret co-created back in the year 2000.

With a few shortcomings in the original material for English Grammar 101, the company enlisted help from Kitty Nash, a middle school language arts teacher. Kitty rewrote the entire series and this new version was launched in 2015 along with a more feature-rich learning management system.

The company continues to work on the materials and software in order to improve the instruction, readability, and usability. Minor improvements are released throughout the year. Major improvements are released each July.

In 2019, the company partnered with Clever to provide single-sign-on and automated rostering—highly requested and powerful features. The partnership with Clever also permitted a new architecture for the application that greatly improved privacy and security.

Visit English Grammar 101 ►

Testimonials for English Grammar 101:

"... a wonderful addition to my curriculum!"
—Florida Teacher

"This site is an absolute treasure."
—Virginia Teacher

"... very happy to have discovered English Grammar 101."
—Florida Teacher

"... very excited about all the improvements!"
—Maine Teacher

"Love it, love it. LOVE the changes."
—DoDEA Teacher

"... very impressive and teacher friendly!"
—Maryland Teacher

Some of Our Customers:

Antelope Valley Union High School District Cloverdale Unified School District Laguna Beach Unified School District Maryville City School District Mexico Central School District Millburn Community Consolidated School District 24 Millcreek Township School District Minooka CCSD 201

Contact Us

Cingletree Learning is a Limited Liability Corporation operating in the state of California.

Direct inquiries to:

Cingletree Learning, LLC
28202 Cabot Rd., Suite 300
Laguna Niguel, CA 92677