About Comprehensive Assessment Services
Comprehensive Assessment Services (CAS) provides independent educational evaluations (IEEs) across California. Founded and directed by Donald Ghrist, LEP, CAS brings over 25 years of experience serving students, parents, and districts through accurate and compassionate assessment.
Our mission is simple — to ensure every student’s unique strengths and needs are fully understood through evidence-based evaluation and professional insight.
- Serving families statewide across California
- Led by Licensed Educational Psychologist Donald Ghrist, LEP #2703
- Independent and unbiased assessments
Why Choose CAS
CAS has earned trust through integrity, precision, and compassion. Our evaluations meet the highest standards, providing clarity and actionable insight for every IEP team.
Objective Evaluations
Completely independent — serving the student, not an agenda. Findings are grounded in standardized data and professional ethics.
Fast Turnaround
Reports are typically delivered within 30 days of completion to support timely IEP decisions.
Statewide Service
Virtual and in-person evaluations available throughout California for accessibility and flexibility.
Multidisciplinary Expertise
Comprehensive assessments across cognitive, behavioral, academic, and communication domains.
Evaluation Disciplines
CAS offers specialized evaluations across multiple disciplines, each conducted by experienced professionals.
Psychoeducational
Academic achievement, cognitive processing, attention, and learning profiles.
Speech & Language (SLP)
Communication, articulation, and expressive/receptive language development.
Occupational Therapy (OT)
Fine motor skills, sensory integration, and classroom participation.
Physical Therapy (PT)
Gross motor and mobility evaluations for educational access.
Adapted PE (APE)
Physical education participation and motor coordination analysis.
Our Evaluation Process
Request
Parents or districts submit a referral or signed IEE agreement. CAS confirms requested disciplines and begins coordination.
Evaluation
Testing sessions are scheduled, conducted by licensed professionals, and followed by interviews and record reviews.
Delivery
Detailed written report and feedback meeting provided within 30 days of final testing date.
Turnaround Time: Most evaluations are completed within 30 days — ensuring prompt, reliable insight for IEP teams.
Frequently Asked Questions
Who can request an IEE?
Parents or guardians may request an independent evaluation when they disagree with a school district’s assessment.
How long does it take?
Most evaluations are completed within 30 days after testing, depending on the disciplines requested.
Does CAS serve my area?
Yes. CAS provides statewide coverage — both virtual and in-person.
Are reports accepted by districts?
Yes. All reports meet state and federal standards for IEP use.
Ready to Begin?
If you’re a parent, advocate, or school district seeking an independent educational evaluation, CAS is ready to help.