CLASS® 2nd Edition Infant-Toddler
A newly reimagined system for observing and supporting the quality of interactions in infant and toddler settings.
Why the update?
The CLASS 2nd Edition Infant–Toddler suite reflects current research, field feedback, and the need for greater cohesion across early childhood age groups.
This version combines Infant and Toddler frameworks into one streamlined tool—with one certification process—making it easier to implement at scale and sustain continuous quality improvement.
What's Included
The CLASS® 2nd Edition Infant–Toddler suite is an all-in-one system that gives you the tools, training, and guidance to elevate interaction quality across infant and toddler settings.
- One Tool, One Training, Less Complexity
Save time and simplify implementation by observing both infants and toddlers with a single, unified framework. - Updated Observer Training
Learn to observe with accuracy and confidence using real classroom footage, guided reflection, and indicator-level scoring practice. - Professional Development & Coaching Resources
Access role-specific learning experiences that help educators translate insights into everyday practice. - Transition Pathways & Coach Add-On Certifications
Add an age group to your certifications or explore the transition pathways from CLASS 2008 to CLASS 2nd Edition.
Get Started with Observation Training
To ensure reliable, meaningful observation, CLASS 2008 observers must complete the new CLASS 2nd Edition Infant–Toddler Observation Training. There are no transition courses available due to the significant differences in structure and scoring in the 2nd Edition tool. Sign up for Infant–Toddler Observation Training today.
Explore our Infant-Toddler Products
For Leaders
CLASS Overview for Leaders
Quickly build your understanding of CLASS, explore the research behind impactful interactions, and access essential guidance for your CLASS implementation
For Observers
CLASS 2nd Edition Infant–Toddler Observer Certification Training
Become an expert in observing educator-child interactions and drive quality impact
For Educators
CLASS Intro to Interactions for Educators
Build foundational skills and confidence for impactful teaching with Teachstone’s Intro to Interactions for Educators training.
CLASS Interaction Essentials for Educators
Empower educators with a deeper understanding of quality interactions and a strengths-based approach to improvement, led by your organization’s Interaction Essentials Trainer
For Trainers and Coaches
CLASS 2nd Edition Measurement Trainer Program
Build capacity to scale your CLASS Implementation. Hone your facilitation skills, deepen your CLASS knowledge, and become your organization’s in-house CLASS trainer and expert.
CLASS Interaction Essentials Trainer Program
Equip early childhood education professionals to facilitate adult learning and deliver research-based CLASS training to support educators within your organization.
For Organizations
CLASS Quality Improvement Subscription
Access a powerful virtual platform that turns CLASS data into meaningful insights and data-driven learning for educators
FAQ
Why combine Infant and Toddler age groups?
Infants and toddlers have rapidly growing developmental needs, and educators can adopt similar approaches for both age groups to foster meaningful interaction in classrooms. The combined framework allows users to focus on one system, ensuring consistent evaluation across age groups and making it easier to track progress.
Additionally, it is more cost-effective, requiring only a single training program instead of two separate certifications in the CLASS 2008 version.
How will Teachstone prepare observers without experience in the age group to assess the developmental appropriateness of interactions?
The Observer Field Guide contains information on infant-toddler development and indicator-level examples of how infants and toddlers might display a certain behavior. These examples will be discussed in the training and included in training activities and video discussions.
Have more questions?
Visit our FAQ page to learn more about the 2nd Edition Infant-Toddler product suite.