The typical cognitive assessments that are used for children require them to be able to use their hands to point to pictures or hold puzzle pieces.
Weight, height and body composition are important indicators for development. The tools used to measure these can be different for children with cerebral palsy.
Children with cerebral palsy (CP) often grow poorly and assessment of growth in this population is further complicated by two main difficulties. Firstly, children may have joint contractures, muscular weakness, scoliosis, and/or involuntary movements that make standing or lying straight difficult, if not impossible.
For a child with CP learning to move, the really important things to remember are that the child should always be active.
Every educator needs to make a decision about technology they need to put in place. They're not sure if they should put Option A in place or Option B in place. This can be particularly difficult in the world of disabilities because there might not always be a perfect answer. Teachers can look to this solution, using the least dangerous assumption to make good decisions about what technology might be best.
When you don't have enough evidence about a student's performance, assume they can do whatever you're asking them to do.