Response to Intervention

Response to Intervention (RTI) is a multi-tier approach to the early identification and support of students with learning and behavior needs. The RTI process begins with high-quality instruction and universal screening of all children in the general education classroom. Struggling learners are provided with interventions at increasing levels of intensity to accelerate their rate of learning. (RTI Action Network)

Across grades K-8, we incorporate block time for response-to-intervention (RtI) actions to address remedial needs, deepen students’ understanding of concepts and skills, reinforce classroom content, and challenge gifted students. This targeted instruction falls into three tiers. Tier I activities take place in the classroom, led by the classroom teacher. In Tier II, interventionists work with specific students in smaller groups, inside and outside the classroom, to support, reteach, reinforce, frontload or expand on information. In Tier III, interventionists work with students in very small ratios for intense, targeted teaching.  If students continue to struggle at Tier III, a referral for special education evaluation may be recommended.

We believe all students have a right to an education that enables them to progress at a satisfactory level, even when the curriculum is standardized across grade levels or by department. When a student experiences academic, emotional, social or developmental difficulties that interfere with this progress, we work to address the concern in the most relevant but least intrusive manner. Parents or staff members can request a Student Support Intervention Team (SSIT) meeting to develop and implement an intervention plan to foster success for any child who is struggling academically, socially or behaviorally. Parents, as their child’s first and primary educator, are invaluable partners in this process and are invited to attend SSIT meetings. 

Cori Christian

Reading Specialist


My name is Cori Christian and the 2017-2018 school year marks the beginning of my 14th year of teaching.  I am very excited about my continuing role as the Reading Specialist and Tier 2 interventionist at 21st Century Preparatory School. Teaching has always been a true passion of mine and I enjoy working with your children every day! In addition to my love of teaching and learning,  I am also the proud mother of two beautiful little girls and a sweet baby boy!   

I believe that all children can learn.  I also believe that each child has unique learning styles that need to be addressed and valued.  I utilize child-centered,hands-onn, and research-based strategies which encourage a love of learning. The role of assessment is also valuable in creating effective and systematic curriculum used to reach the needs of each individual learner. My goal as the reading specialist is to use effective strategies and continuous progress monitoring to help our struggling students become proficient readers. I am excited for this school year and will continue to encourage students’ LOVE of READING!

Kathy Schattshneider

Math Specialist

How I see myself living out the philosophy of 21st Century Prep School Community through my teaching…


I believe that every child possesses the ability to learn.  All children learn in different ways and by different styles, but all can grow as a learner.  I believe that as a teacher I am a role model and shall lead my students, by example, to become lifelong learners.


As a teacher, I must arouse the students’ interest by inspiring and nurturing their questions.  Questioning is a vital part of learning.  I will provide an atmosphere that will allow the free flowing of information by teaching guidelines for living, to instilling respect and responsibility.  I believe that a positive environment will provide the students limitless opportunities to achieve whatever they choose.  Children that grow to respect themselves will also respect others.


This is my fifteenth year at 21st. I have taught third, fourth, sixth and middle school.  This year I am excited to be the Math Specialist for the elementary school.  Math has always been my passion. I look forward to working with all of the students and sharing my love of math with them.