Evidence from research demonstrates that the curriculum has been associated with children's positive learning outcomes. The curriculum has been implemented and directly studied in early childhood programs, and the research showed significant, positive effects on children's developmental outcomes. Evidence of effectiveness has been obtained in rigorous research studies, such as randomized controlled trials or regression discontinuity designs. Research studies on the curriculum have optimally included multiple, diverse groups of children and teachers.

The curriculum provides research-based interactions and teaching practices to support children's development and learning. A research-based curriculum is consistent with research on how children develop and learn. Specifically, it promotes interactions, teaching practices, and learning experiences that research has shown to be effective in supporting children's development and learning.

The curriculum includes an organized developmental scope and sequence to support children's development and learning. A scope and sequence outlines what the curriculum focuses on and how the plans and materials support children at different levels of development. The scope refers to the areas of development addressed by the curriculum; the sequence includes plans and materials for learning experiences that progressively build from less to more complex, with the goal of supporting children as they move through the developmental progressions. A content-rich curriculum ensures that sequences of learning experiences include multiple, related opportunities for children to explore a concept or skill with increasing depth. Sequences of learning experiences should be flexible to respond to individual children's interests, strengths, and needs.

The curriculum is aligned with the ELOF. Aligning a curriculum with the ELOF identifies the extent to which ELOF domains and sub-domains are addressed in the curriculum. Curricula that are fully aligned with the ELOF are comprehensive and cover all areas of children's learning and development described in the ELOF.

The curriculum specifies learning goals for children. The curriculum's learning goals are objectives for children's development and learning across domains. Learning goals should be measurable and developmentally appropriate. Measurable learning goals focus on skills, behaviors, and knowledge that are observable; developmentally appropriate learning goals are consistent with well-established developmental progressions. Teachers should be able to use a curriculum's learning goals to individualize learning experiences for all children, such as children from diverse cultures, children who are dual language learners, children who are tribal language learners, and children with disabilities or other special needs.

The curriculum provides guidance on ongoing child assessment. Ongoing child assessment is a process of gathering information to understand and support children's development over time. Information gathered through observation and documentation helps inform curriculum planning, teaching, and individualizing for all children. Ongoing child assessment can also be used to periodically complete standardized and structured assessment instruments to evaluate children's developmental progress.

The curriculum promotes parent and family engagement. Parent and family engagement is a collaborative and strengths-based process through which early childhood teachers, families, and children build positive and goal-oriented relationships. It is a shared responsibility of families and staff that is built on mutual respect for the roles and strengths each has to offer. The curriculum provides culturally and linguistically responsive strategies to communicate with families and to engage families in children's learning.

The curriculum offers professional development and materials to support implementation and continuous improvement. Professional development includes gaining the knowledge and skills required for effective implementation of a curriculum. Standardized training procedures include initial and ongoing training to support education staff as they learn to implement a curriculum with fidelity. Standardized training procedures provide consistent content and delivery methods across training sessions. Curriculum materials to support implementation include resources that come with a curriculum to help education staff understand how to use it. The materials may also include resources to help education managers and coaches support education staff to implement the curriculum effectively.

The curriculum promotes rich learning experiences and interactions to support development across domains. For infants and toddlers, rich learning experiences take place within the context of an engaging play environment, interactions and conversations with caregivers and peers, and daily caregiving routines. Rich learning experiences support and extend children's knowledge, understanding of concepts, and skills across domains. Infants and toddlers develop and learn by freely moving their bodies and actively exploring their environments in open-ended ways. The curriculum offers infants and toddlers ample opportunities to move and explore and provides teachers with guidance on how to interact with children to extend exploration, thinking, and communication. Rich learning experiences should be culturally and linguistically responsive and inclusive of children with disabilities, suspected delays, or other special needs.

The curriculum provides guidance on how to set up rich learning environments and developmentally appropriate routines. Rich learning environments are nurturing spaces that support the development of all young children. The curriculum provides guidance on how to design developmentally appropriate schedules, routines, and indoor and outdoor opportunities for choice, play, exploration, and experimentation. Learning environments include age-appropriate equipment, materials, and supplies. They also reflect home cultures and are flexible to support the changing ages, interests, and characteristics of a group of children over time.

The curriculum supports cultural responsiveness. Cultural responsiveness is a strengths-based approach to teaching and caregiving rooted in respect and appreciation for the role of culture in children's learning and development. A culturally responsive curriculum prompts teachers to learn about each child's strengths, abilities, experiences, and interests as developed within the child's family and culture. The curriculum provides guidance on how to modify and enhance curriculum plans and materials to build on these strengths, abilities, experiences, and interests with the goal of incorporating each child's culture into the classroom.

The curriculum supports linguistic responsiveness. Linguistic responsiveness refers to teaching practices that support the learning, development, and engagement of children from diverse linguistic backgrounds. It includes supports for continued development of children's home or tribal languages by authentically incorporating children's languages into the learning environment. Furthermore, linguistically responsive practices can facilitate English acquisition. The curriculum provides scaffolding strategies to support children at any level of English knowledge to fully participate in the curriculum's learning experiences and environment. For infants and toddlers, linguistic responsiveness requires partnering with families to intentionally support the development and learning of children who are dual language learners (DLLs). This process includes developing a plan, based on the languages of the teacher and family, to support a child's development of each language in the classroom as well as at home.

The curriculum provides guidance on how to individualize for children with disabilities, suspected delays, or other special needs. Individualization for children with disabilities, suspected delays, or other special needs includes providing more specialized supports for children to access and participate in learning, social experiences, and activities. The curriculum's guidance for specialized supports includes specific teaching practices and ways of interacting with children, as well as adaptations to daily schedules, learning activities, and the learning environment. Individualizing for children with disabilities, suspected delays, or other special needs enables all children to access, participate, and thrive in early learning settings.

The curriculum offers guidance on how to individualize based on children's interests, strengths, and needs. Individualization is a process of planning and implementing learning experiences that are responsive to each child's interests, strengths, and needs. Teachers reflect on their observations of each child and then plan the most effective ways to support each child's learning and development. When learning experiences are tailored to children's interests, they are more engaging and meaningful to children. Because children may vary in their developmental progressions, it is also important that the curriculum supports teachers in planning learning experiences that are responsive to individual children's strengths and needs.