Cerebral palsy refers to a group of conditions that are caused by problems in brain development and that affect how movement and motor control happen in children. Problems with walking and talking are often the way people start a conversation about cerebral palsy.
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.
One of the things that we typically forget when we look at kids who have conditions like CP, is that they're first and foremost, children.
Upper limb therapies and interventions have been well studied in cerebral palsy. Different interventions that have good evidence are Constraint Induced Movement Therapy (CIMT) and Bimanual Therapy. CIMT has been shown to be successful in children with hemiplegic cerebral palsy (CP). CIMT uses a splint to physically constrain the uninvolved arm and encourage them to use the more involved or affected arm.
When you don't have enough evidence about a student's performance, assume they can do whatever you're asking them to do.