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 original Infant and Toddler CLASS tools served programs for over 15 years. But learning settings—and educators—have evolved. The 2nd Edition Infant–Toddler product suite, available for delivery on August 1, 2025, 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 and more cost-effective to build and maintain quality interaction practices across your program.
What's Included
The CLASS® 2nd Edition Infant–Toddler product suite is an all-in-one system that gives you the tools, training, and guidance to elevate interaction quality across infant and toddler settings. See the full list of products here.
- One Streamlined CLASS Tool
Observe 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 tools and training that help educators translate insights into everyday practice. - Trainer & Coach Add-On Certifications
Self-paced transition pathways for existing CLASS 2nd Edition Pre-K–3rd trainers and coaches.
Benefits at a Glance
Whether you’re an educator, administrator, or coach, CLASS 2nd Edition Infant–Toddler product suite helps you spend less time managing logistics—and more time supporting quality interactions.
- One Tool, One Training, Less Complexity
No need to certify separately for infants and toddlers. This saves time, reduces costs, and simplifies implementation. - Aligned with Latest Research
Dimensions and indicators are grounded in what works best for infants and toddlers today. - Supports Consistent Growth
Track quality improvement efforts from infancy through third grade, using aligned tools across the CLASS 2nd Edition continuum. - Stronger Coaching, Better Outcomes
New scoring guidance and field examples make it easier to give meaningful feedback. - Saves Time & Resources
Streamline professional development and reduce training costs across your organization.
Observer and Trainer Pathways
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.
For CLASS-certified trainers and coaches, Add-On Certifications are available for self-study. These make it easy to expand your credentials and bring the updated tool to your program.
Transitioning from CLASS 2008?
Learn more about what CLASS 2nd Edition enhancements mean for your organization.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.