RPI Demystified: Unlocking the Power of the WJ V Proficiency Scores

RPI Demystified: Unlocking the Power of the WJ V Proficiency Scores

February 17 | 11:00 AM CST

Discover the assessment data that changes everything. Join us for this transformative 1-hour professional development session that demystifies the Relative Proficiency Index (RPI)—the criterion-referenced score that reveals what standard scores alone cannot tell you. Through a case study journey, you’ll master practical RPI interpretation skills that immediately strengthen your evaluations.  While many evaluators report RPI scores, they don’t fully leverage their power. This session transforms RPI from a mysterious fraction into your most powerful tool for translating assessment results into actionable plans.  Using this powerful tool yields more accurate SLD identification, stronger IEP goals, better parent partnerships, and legally defensible evaluation reports. 

This webinar combines research-backed methodology with practice opportunities, teaching you to:

• Locate and interpret RPI scores on WJ V reports
• Translate technical data into IEP-friendly language parents actually understand
• Make defensible intervention decisions using RPI combined with multiple sources of data
• Write comprehensive, legally sound reports that drive targeted interventions

Learning Objectives:
By the end of this professional development session, participants will be able to:

1) Data-Based Decision Making (NASP Domain 1): Interpret RPI scores effectively and integrate them with standard scores, confidence intervals and multiple data sources to inform defensible SLD identification decisions. 
2) Professional Communication (NASP Domain 3): Communicate RPI scores effectively to parents, teachers, and IEP teams using plain language that translates technical assessment data into practical, actionable insights for supporting student learning.
3) Research and Evidence-Based Practice (NASP Domain 9): Evaluate and explain why criterion-referenced measures (RPI) complement norm-referenced scores for more comprehensive, instructionally meaningful evaluations. 

Speakers: Becki Robertson, M.Ed.

Becki Robertson, M.Ed. is a national presenter and experienced practitioner with more than 30 years of service as a public-school educational diagnostician, including leadership roles, preceded by work as both a general and special education teacher. She currently serves as Senior Product Advocate for the Woodcock-Johnson® V at Riverside Insights and as a field supervisor in an educational diagnostician certification program, supporting the preparation and professional growth of evaluation staff.

Her professional interests include specific learning disability evaluations, assessment of low-incidence populations, and the application of learning theory to evidence-based evaluation and intervention practices. Outside of her professional work, Becki enjoys outdoor activities, running, crafting, and woodworking.