--- title: CLASS Toddler Technical Appendix | Resources | Teachstone description: Learn about the initial validity findings and descriptive statistics around the pyschometric properties of the Toddler CLASS tool. --- Read the report ![](https://info.teachstone.com/hubfs/Template/downward_arrow2x_Red.png) ![Toddler CLASS Manual Technical Appendix](https://info.teachstone.com/hs-fs/hubfs/Toddler-Cover.jpg?width=300&name=Toddler-Cover.jpg "Toddler CLASS Manual Technical Appendix") # CLASS Toddler Technical Appendix #### The data behind using CLASS at the toddler age level.  *Share with a colleague:* [![Share on Facebook](https://static.hubspot.com/final/img/common/icons/social/facebook-24x24.png)](http://www.facebook.com/share.php?u=http%3A%2F%2Finfo.teachstone.com%2Fresources%2Fresearch%2Fclass-toddler-technical-appendix%3Futm_medium%3Dsocial%26utm_source%3Dfacebook) [![Share on LinkedIn](https://static.hubspot.com/final/img/common/icons/social/linkedin-24x24.png)](http://www.linkedin.com/shareArticle?mini=true&url=http%3A%2F%2Finfo.teachstone.com%2Fresources%2Fresearch%2Fclass-toddler-technical-appendix%3Futm_medium%3Dsocial%26utm_source%3Dlinkedin) [![Share on Twitter](https://static.hubspot.com/final/img/common/icons/social/twitter-24x24.png)](https://twitter.com/intent/tweet?original_referer=http%3A%2F%2Finfo.teachstone.com%2Fresources%2Fresearch%2Fclass-toddler-technical-appendix%3Futm_medium%3Dsocial%26utm_source%3Dtwitter&url=http%3A%2F%2Finfo.teachstone.com%2Fresources%2Fresearch%2Fclass-toddler-technical-appendix%3Futm_medium%3Dsocial%26utm_source%3Dtwitter&source=tweetbutton&text=CLASS%20Toddler%20Technical%20Appendix%20%7C%20Resources%20%7C%20Teachstone) [![Share on Pinterest](https://static.hubspot.com/final/img/common/icons/social/pinterest-24x24.png)](http://pinterest.com/pin/create/button/?url=http%3A%2F%2Finfo.teachstone.com%2Fresources%2Fresearch%2Fclass-toddler-technical-appendix%3Futm_medium%3Dsocial%26utm_source%3Dpinterest&media=https%3A%2F%2Fcdn2.hubspot.net%2Fhubfs%2F336169%2FToddler-Cover.jpg) [![Share on Email](https://static.hubspot.com/final/img/common/icons/social/email-24x24.png)](mailto:?subject=Check%20out%20http%3A%2F%2Finfo.teachstone.com%2Fresources%2Fresearch%2Fclass-toddler-technical-appendix%3Futm_medium%3Dsocial%26utm_source%3Demail%20&body=Check%20out%20http%3A%2F%2Finfo.teachstone.com%2Fresources%2Fresearch%2Fclass-toddler-technical-appendix%3Futm_medium%3Dsocial%26utm_source%3Demail) #### CLASS is a valid tool based on extensive review and observed practice.  This technical appendix presents the psychometric properties of the Toddler version of the CLASS, including descriptive statistics and initial validity findings. To download the free report submit the form on this page.  ### Download the Report - [About Teachstone](http://teachstone.com/about-teachstone/) - [Our Partners](http://teachstone.com/our-partners/) - [Careers](http://teachstone.com/careers/) - [Support](https://teachstone.com/support/) - [Contact Sales](https://info.teachstone.com/contact-a-teachstone-representative) - [Interact Class Summit 2023](https://teachstone.com/interact-class-summit/) Everyday we work to improve teacher-child interactions and we are proud to do so in a business community committed to the highest standards of social and environmental impact. [What this means](https://bcorporation.net/) [Search Jobs](http://teachstone.com/careers/) - [Facebook](https://www.facebook.com/Teachstone) - [LinkedIn](https://www.linkedin.com/company/teachstone/) - [Twitter](https://twitter.com/Teachstone) - [Pinterest](https://www.pinterest.com/teachstone/pins/) - [Privacy Policy](http://teachstone.com/privacy-policy/) - [Terms of Use](http://teachstone.com/terms-conditions/) - [Web Accessibility](http://teachstone.com/web-accessibility/) - [Permissions](http://teachstone.com/permissions/) © 2026 Teachstone Training, LLC